WX1BOX – Amateur Radio Station at NWS Boston/Norton

Severe Weather Coordination Message #2 – Tuesday PM/Evening 7/1/25 Severe Weather/Flood Potential

July 1, 2025 Rob Macedo

Hello to all…

.. Showers and thunderstorms were confined to Southeast New England and offshore for Tuesday Morning and were less in coverage than modeled. Isolated to Scattered Strong to Severe Thunderstorms remain possible Tuesday Afternoon and Evening between 3-9 PM across Southern New England with strong to damaging winds, hail, frequent lightning and torrential rainfall leading to urban and poor drainage flooding to flash flooding as the main threats for portions of the region..
..The Storm Prediction Center (SPC) has continued a marginal risk for severe weather for all of Southern New England for Tuesday. The biggest severe weather potential is likely over interior Southern New England from the I-95 corridor north and west..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets will any severe thunderstorm/flood potential for Tuesday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

A warm front is pushing through the region Tuesday Morning followed by a cold front late Tuesday Afternoon and Evening. The morning activity was limited to Southeast New England and offshore of the coast and clearing is moving in from west to east. This will set the stage for a cold front with isolated to scattered strong to severe thunderstorms swinging through the area. The headlines depict the current thinking. Key factors include:

1.) With less extensive shower and thunderstorm coverage this morning, Satellite imagery is showing reasonably good clearing which should allow for destabilization. The more clearing that develops, the greater heating and destabilization to allow for severe thunderstorm potential in the afternoon and evening.
2.) Timing of the cold front near the timing of peak heating presuming sufficient clearing develops. This will be the needed trigger for thunderstorm development and will dictate the coverage of thunderstorms.
3.) As always with severe/non-severe thunderstorm events, not all locations will receive a severe/non-severe thunderstorm. They will be isolated to scattered with pockets of wind damage, hail and urban/poor drainage flooding in those isolated to scattered locations.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets will monitor any severe thunderstorm potential for Tuesday Afternoon and Evening. This will be the last coordination message as we move into operations mode. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-1 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Section Emergency Coordinator
Home Phone #: (508) 994-1875 (After 6 PM)
Home/Data #: (508) 997-4503 (After 6 PM)
Email Address: rmacedo@rcn.com
https://ares.ema.arrl.org
https://www.wx1box.org
Like us on Facebook – https://www.facebook.com/wx1box
Follow us on Twitter – https://twitter.com/wx1box
Subscribe on YouTube – https://www.youtube.com/@wx1box-nwsboston-amateur-radio

Uncategorized

Severe Weather Coordination Message #1 – Tuesday 7/1/25 Severe Weather/Flood Potential

July 1, 2025 Rob Macedo

Hello to all…

..Showers and thunderstorms will occur Tuesday Morning and will likely be non-severe but could produce frequent lightning, urban and poor drainage flooding and will be monitored. Isolated to Scattered Strong to Severe Thunderstorms possible Tuesday Afternoon and Evening between 3-9 PM across Southern New England with strong to damaging winds, hail, frequent lightning and torrential rainfall leading to urban and poor drainage flooding to flash flooding as the main threats for portions of the region..
..The Storm Prediction Center (SPC) has a marginal risk for severe weather for all of Southern New England for Tuesday..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets will monitor any thunderstorm flooding potential for Tuesday Morning and any severe thunderstorm potential for Tuesday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

A warm front will push through the region Tuesday Morning followed by a cold front late Tuesday Afternoon and Evening. This will bring at least 2 rounds of thunderstorms with the morning thunderstorms likely sub-severe and the afternoon/evening thunderstorms having the best chance for severe potential. The headlines depict the current thinking. Key factors include:

1.) How extensive morning showers and thunderstorms are and how much clearing occurs after that activity moves out of the area. The more clearing that develops, the greater heating and destabilization to allow for severe thunderstorm potential in the afternoon and evening.
2.) The morning activity is expected to be non-severe but it will be monitored and could produce localized street flooding during the Tuesday Morning commute.
3.) Timing of the cold front near the timing of peak heating presuming sufficient clearing develops.
4.) As always with severe/non-severe thunderstorm events, not all locations will receive a severe/non-severe thunderstorm. They will be isolated to scattered with pockets of wind damage, hail and urban/poor drainage flooding in those isolated to scattered locations.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets will monitor any thunderstorm flooding potential for Tuesday Morning and any severe thunderstorm potential for Tuesday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-2 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2025/day2otlk_20250630_1730.html

Respectfully Submitted,

Uncategorized

Severe Weather & Amateur Radio Field Day Weekend Coordination Message #4 – Weekend of 6/28/25-6/29/25

June 28, 2025 Rob Macedo

Hello to all..

..The following is the fourth and final in a series of messages on Amateur Radio Field Day Weekend and providing information on the weather during this period. This is a tradition spanning over 25 years for Amateur Radio Operators involved with Field Day and the NWS Boston/Norton SKYWARN Program..
..For 2025 Amateur Radio Field Day Weekend, the main weather concern after shower activity and drizzle that is passing through Southern New England this morning is for thunderstorms later Saturday Afternoon and Evening between 4-10 PM particularly in Western Massachusetts and Western Connecticut but general thunderstorms with an attendant lightning risk could affect the rest of Southern New England during the evening and early overnight hours Saturday Night. The Storm Prediction Center (SPC) has placed areas of Western Massachusetts and Western Connecticut in a marginal to slight risk for severe weather with strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding as the main threats. The warm front is expected to remain near or north of Route 2 possibly into Southern Vermont/New Hampshire today allowing much of the region to warm sector if sufficient clearing occurs..
..Sunday looks to be a typical warm summer day with no rain expected and temperatures in the low to mid 80s in much of the region away from the immediate coast..
..We will not see the extreme heat we saw earlier this week during Field Day Weekend but we will see normal summer-like conditions on Saturday in areas of Southern New England south of Route 2 and on Sunday region wide so staying hydrated and taking occasional breaks from strenuous activities is still advised particularly for this weekend..
..The main threat for showers and isolated thunderstorms and any severe weather potential is confined to Saturday with the greatest risk the further southwest you are from the Route 2 corridor. Not everyone will see a shower or thunderstorm and it will not be a washout but outdoor Amateur Radio Field Day weekend sites should have rain gear on hand for setup and during Field Day Operations.
..Any thunderstorms have lightning potential which is a safety hazard for all Amateur Radio Field Day sites. Amateur Radio Field Day sites are encouraged to guard their local Amateur Radio SKYWARN frequency and have multiple ways to receive weather alerts during the course of this Field Day weekend including by cell phone/Internet and NOAA Weather Radio. It is noted that Soapstone Mountain Somers CT NOAA Weather Radio was having issues as of Friday Evening and may still be having technical issues for Saturday..
..Amateur Radio Field Day Weekend is an annual event where Ham Operators across the United States setup at Emergency Operations Centers, field locations, home locations etc. to operate and test their equipment and skills and make as many radio contacts as possible during the weekend..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible on Saturday late Afternoon and evening. No SKYWARN Activation or weather issues are expected for Sunday other than exercising some heat safety precautions. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

Here are some links to information on these Amateur Radio Field Day Sites from across the region.

Amateur Radio Field Day Information: https://www.arrl.org/field-day
Amateur Radio Field Day National Locator: https://www.arrl.org/field-day-locator
Eastern Massachusetts Field Day Home Page: https://ema.arrl.org/field-day/
Eastern Massachusetts Field Day Directory: https://ema.arrl.org/field_day/

For Saturday, the main weather concern after shower activity and drizzle that is passing through Southern New England this morning is for thunderstorms later Saturday Afternoon and Evening between 4-10 PM particularly in Western Massachusetts and Western Connecticut but general thunderstorms with an attendant lightning risk could affect the rest of Southern New England during the evening and early overnight hours Saturday Night. The Storm Prediction Center (SPC) has placed areas of Western Massachusetts and Western Connecticut in a marginal to slight risk for severe weather with strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding as the main threats. The warm front is expected to remain near or north of Route 2 possibly into Southern Vermont/New Hampshire today allowing much of the region to warm sector if sufficient clearing occurs. Key factors on the severe weather potential are as follows:

1.) Clearing for heating and destabilization. Satellite pictures show breaks in the clouds in Eastern New York and lower cloud cover slowly eroding in western areas and this expected to allow for at least some clearing from late morning through mid-afternoon Saturday from west to east.
2.) Timing of the cold front and forcing to overlap with instability presuming sufficient clearing as this timing will be towards evening.
3.) Not everyone will see a shower or thunderstorm and it will not be a washout but outdoor Amateur Radio Field Day weekend sites should have rain gear on hand for setup and during Field Day Operations and have multiple ways to receive weather alerts as any thunderstorm can product lightning which is a danger to Field Day sites and can affect areas up to 15-20 miles from the actual thunderstorm.

Sunday looks to be a typical warm summer day with no rain expected and temperatures in the low to mid 80s in much of the region away from the immediate coast.

While not as hot as earlier in the week, it looks to be warm and humid in areas south of the Route 2 corridor on Saturday and Sunday region wide for outdoor activities over the Field Day weekend period so Field Day sites should have plenty of liquids on hand and a place nearby to cool down whether it be a building or cars with AC to stay cool from the heat and take occasional breaks from strenuous activities. Heat tips and safety guidelines are also included in this message.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible on Saturday late Afternoon and evening. No SKYWARN Activation or weather issues are expected for Sunday other than exercising some heat safety precautions. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Below are links to the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-2 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

Amateur Radio Field Day sites are encouraged to bring a NOAA All-Hazards Weather Radio, monitor various cell phone weather apps where Amateur Operators may have those available and have a dedicated Ham Radio that can monitor their local SKYWARN frequency for their area as a best safety and preparedness practice as there is a threat for thunderstorm development and any thunderstorm can be a threat to the safety of Amateur Radio Field Day sites. It is noted that Soapstone Mountain Somers CT NOAA Weather Radio was having issues as of Friday Evening and may still be having technical issues for Saturday. Also sites that have mobile Internet capability can utilize that capability as a way to monitor for weather information. With Mobile Internet capability, utilizing Echolink to monitor the New England Reflector system on Echolink Conference *NEW-ENG3* Node: 9123/IRLP 9123 would be helpful as well. Please see the link below for the latest SKYWARN Frequency information for the region:
https://wx1box.org/southern-new-england-skywarn-frequency-list/

During setup and takedown of Amateur Radio Field Day sites and even while operating, be sure to drink plenty of fluids and eat accordingly. The link below features information on Heat Safety:
https://www.weather.gov/safety/heat

With the thunderstorm threat for Saturday now is the time to remind folks that lightning is a threat to any and all Amateur Radio Field Day sites. Remember your lightning safety tips and details on lightning safety can be seen at the following link and we have also added a link from the 2023 NWS Boston/Norton Lightning Safety Awareness Week and Public Information Statements on Lightning Safety. See links below:
https://www.weather.gov/safety/lightning
https://wx1box.org/wp-content/uploads/2023/06/lightning_safety_awareness_PNS_2023.pdf

Given no severe weather concerns, this will be the last Severe Weather & Amateur Radio Field Day weekend coordination message as we shift to a monitoring and operations mode for thunderstorms as needed for Saturday. We hope the Amateur Radio community participating in Field Day has a great weekend!

Respectfully Submitted,

Uncategorized

Severe Weather & Amateur Radio Field Day Weekend Coordination Message #3 – Saturday 6/28/25-Sunday 6/29/25

June 27, 2025 Rob Macedo

Hello to all..

..The following is the third in a series of messages on Amateur Radio Field Day Weekend and providing information on the weather during this period. This is a tradition spanning over 25 years for Amateur Radio Operators involved with Field Day and the NWS Boston/Norton SKYWARN Program..
..For 2025 Amateur Radio Field Day Weekend, Friday turned out a bit warmer and sunnier today with temperatures in most areas in the low to mid 70s. There remains uncertainty whether portions of Southern New England will break into the warm sector on Saturday but things look similar to the prior update. Current indications are the warm front may stall near the Route 2 corridor with areas south of the front seeing temperatures from the 70s to mid-80s the farther southwest you go while along and north of Route 2, temperatures will remain in the 60s to around 70. There could be showers and an isolated non-severe thunderstorm Saturday Morning as the warm front moves through followed by a break and then thunderstorms and perhaps even isolated severe weather could occur late Saturday Afternoon into late Saturday Night/early Sunday Morning as a cold front moves through with the greatest thunderstorm risk the further southwest you are in Southern New England. Sunday will see summertime warmth and humidity with no rain after the overnight hours..
..The Storm Prediction Center (SPC) has extended the marginal risk a bit further east into portions of Western Massachusetts and Western Connecticut with the general thunderstorm risk across all of Southern New England Saturday. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the main threats. Will monitor for any additional eastward trend in the marginal risk area which is contingent on the warm front and how much of the region warm sectors..
..We will not see the extreme heat we saw earlier this week during Field Day Weekend but we could see normal summer-like conditions on Saturday in areas of Southern New England south of Route 2 and on Sunday region wide so staying hydrated and taking occasional breaks from strenuous activities is still advised particularly for this weekend..
..There will be the threat for showers and isolated thunderstorms and at this time, any severe weather potential is confined to Saturday with the greatest risk the further southwest you are from the Route 2 corridor. Not everyone will see a shower or thunderstorm and it will not be a washout but outdoor Amateur Radio Field Day weekend sites should have rain gear on hand for setup and during Field Day Operations.
..Any thunderstorms have lightning potential which is a safety hazard for all Amateur Radio Field Day sites. Amateur Radio Field Day sites are encouraged to guard their local Amateur Radio SKYWARN frequency and have multiple ways to receive weather alerts during the course of this Field Day weekend including by cell phone/Internet and NOAA Weather Radio..
..Amateur Radio Field Day Weekend is an annual event where Ham Operators across the United States setup at Emergency Operations Centers, field locations, home locations etc. to operate and test their equipment and skills and make as many radio contacts as possible during the weekend..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible on Saturday late Afternoon and evening. At this time, there does not appear to be a need for any type of SKYWARN Self-Activation or Amateur Radio Call-Up Nets for Sunday but the situation will be monitored closely for any weather support to Amateur Radio Field Day sites as needed on those days. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

Here are some links to information on these Amateur Radio Field Day Sites from across the region.

This year’s Amateur Radio Field Day Weekend will not see the extreme heat of earlier this week. Friday turned out a bit warmer and sunnier today with temperatures in most areas in the low to mid 70s. There remains uncertainty whether portions of Southern New England will break into the warm sector on Saturday but things look similar to the prior update. Current indications are the warm front may stall near the Route 2 corridor with areas south of the front seeing temperatures from the 70s to mid-80s the farther southwest you go while along and north of Route 2, temperatures will remain in the 60s to around 70. There could be showers and an isolated non-severe thunderstorm Saturday Morning as the warm front moves through followed by a break and then thunderstorms and perhaps even isolated severe weather could occur late Saturday Afternoon into late Saturday Night/early Sunday Morning as a cold front moves through with the greatest thunderstorm risk the further southwest you are in Southern New England. Sunday will see summertime warmth and humidity with no rain after the overnight hours.

The Storm Prediction Center (SPC) has extended the marginal risk a bit further east into portions of Western Massachusetts and Western Connecticut with the general thunderstorm risk across all of Southern New England Saturday. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the main threats. Will monitor for any additional eastward trend in the marginal risk area which is contingent on the warm front and how much of the region warm sectors.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible on Saturday. At this time, there does not appear to be a need for any type of SKYWARN Self-Activation or Amateur Radio Call-Up Nets for Friday or Sunday but the situation will be monitored closely for any weather support to Amateur Radio Field Day sites as needed on those days. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Below are links to the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-2 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2025/day2otlk_20250627_1730.html

Amateur Radio Field Day sites are encouraged to bring a NOAA All-Hazards Weather Radio, monitor various cell phone weather apps where Amateur Operators may have those available and have a dedicated Ham Radio that can monitor their local SKYWARN frequency for their area as a best safety and preparedness practice as there is a threat for thunderstorm development and any thunderstorm can be a threat to the safety of Amateur Radio Field Day sites. Also sites that have mobile Internet capability can utilize that capability as a way to monitor for weather information. With Mobile Internet capability, utilizing Echolink to monitor the New England Reflector system on Echolink Conference *NEW-ENG3* Node: 9123/IRLP 9123 would be helpful as well. Please see the link below for the latest SKYWARN Frequency information for the region:

Southern New England SKYWARN Frequency List

With the thunderstorm threat particularly for Saturday but possibly also Friday, now is the time to remind folks that lightning is a threat to any and all Amateur Radio Field Day sites. Remember your lightning safety tips and details on lightning safety can be seen at the following link and we have also added a link from the 2023 NWS Boston/Norton Lightning Safety Awareness Week and Public Information Statements on Lightning Safety. See links below:
https://www.weather.gov/safety/lightning
https://wx1box.org/wp-content/uploads/2023/06/lightning_safety_awareness_PNS_2023.pdf

The next Severe Weather & Amateur Radio Field Day weekend coordination message will be posted by 10 AM Saturday Morning. We hope the Amateur Radio community participating in Field Day has a great weekend!

Respectfully Submitted,

Uncategorized

Severe Weather & Amateur Radio Field Day Weekend Coordination Message #2 – Friday 6/27/25-Sunday 6/29/25

June 27, 2025 Rob Macedo

Hello to all..

..The following is the second in a series of messages on Amateur Radio Field Day Weekend and providing information on the weather during this period. This is a tradition spanning over 25 years for Amateur Radio Operators involved with Field Day and the NWS Boston/Norton SKYWARN Program..
..For 2025, Amateur Radio Field Day Weekend will feature cooler than normal conditions Friday with showers and isolated thunderstorms. There remains uncertainty whether portions of Southern New England will break into the warm sector on Saturday. Current indications are the warm front may stall near the Route 2 corridor with areas south of the front seeing temperatures from the 70s to mid-80s the farther southwest you go while along and north of Route 2, temperatures will remain in the 60s to around 70. There could be showers and an isolated non-severe thunderstorm Saturday Morning as the warm front moves through followed by a break and then thunderstorms and perhaps even isolated severe weather could occur late Saturday Afternoon into late Saturday Night/early Sunday Morning as a cold front moves through with the greatest thunderstorm risk the further southwest you are in Southern New England. Sunday will see summertime warmth and humidity with no rain after the overnight hours..
..We will not see the extreme heat we saw earlier this week during Field Day Weekend but we could see normal summer-like conditions on Saturday in areas of Southern New England south of Route 2 and on Sunday region wide so staying hydrated and taking occasional breaks from strenuous activities is still advised particularly for this weekend..
..There will be the threat for showers and isolated thunderstorms and at this time, any severe weather potential is confined to Saturday with the greatest risk the further southwest you are from the Route 2 corridor. Not everyone will see a shower or thunderstorm and it will not be a washout but outdoor Amateur Radio Field Day weekend sites should have rain gear on hand for setup and during Field Day Operations.
..Any thunderstorms have lightning potential which is a safety hazard for all Amateur Radio Field Day sites. Amateur Radio Field Day sites are encouraged to guard their local Amateur Radio SKYWARN frequency and have multiple ways to receive weather alerts during the course of this Field Day weekend including by cell phone/Internet and NOAA Weather Radio..
..Amateur Radio Field Day Weekend is an annual event where Ham Operators across the United States setup at Emergency Operations Centers, field locations, home locations etc. to operate and test their equipment and skills and make as many radio contacts as possible during the weekend..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible on Saturday late Afternoon and evening. At this time, there does not appear to be a need for any type of SKYWARN Self-Activation or Amateur Radio Call-Up Nets for Friday or Sunday but the situation will be monitored closely for any weather support to Amateur Radio Field Day sites as needed on those days. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

Here are some links to information on these Amateur Radio Field Day Sites from across the region.

This year’s Amateur Radio Field Day Weekend will not see the extreme heat of earlier this week. Friday looks cool with some showers scattered about the area and the chance for an isolated non-severe thunderstorm. There remains uncertainty whether portions of Southern New England will break into the warm sector on Saturday. Current indications are the warm front may stall near the Route 2 corridor with areas south of the front seeing temperatures from the 70s to mid-80s the farther southwest you go while along and north of Route 2, temperatures will remain in the 60s to around 70. There could be showers and an isolated non-severe thunderstorm Saturday Morning as the warm front moves through followed by a break and then thunderstorms and perhaps even isolated severe weather could occur late Saturday Afternoon into late Saturday Night/early Sunday Morning as a cold front moves through with the greatest thunderstorm risk the further southwest you are in Southern New England. The best severe weather potential resides over Eastern New York State but could spill into portions of Southern New England depending on the timing of the cold front, instability levels and shear profiles. Regardless of the severe weather threat, all thunderstorms contain an attendant lightning risk that Field Day sites should monitor closely. Sunday will see summertime warmth and humidity with no rain after the overnight hours.

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

Amateur Radio Field Day sites are encouraged to bring a NOAA All-Hazards Weather Radio, monitor various cell phone weather apps where Amateur Operators may have those available and have a dedicated Ham Radio that can monitor their local SKYWARN frequency for their area as a best safety and preparedness practice as there is a threat for thunderstorm development and any thunderstorm can be a threat to the safety of Amateur Radio Field Day sites. Also sites that have mobile Internet capability can utilize that capability as a way to monitor for weather information. With Mobile Internet capability, utilizing Echolink to monitor the New England Reflector system on Echolink Conference *NEW-ENG3* Node: 9123/IRLP 9123 would be helpful as well. Please see the link below for the latest SKYWARN Frequency information for the region:
https://wx1box.org/southern-new-england-skywarn-frequency-list/

The next Severe Weather & Amateur Radio Field Day weekend coordination message will be posted by 11 PM Friday Evening. We hope the Amateur Radio community participating in Field Day has a great weekend!

Respectfully Submitted,

Uncategorized

Severe Weather & Amateur Radio Field Day Weekend Coordination Message #1 – Friday 6/27/25-Sunday 6/29/25

June 27, 2025 Rob Macedo

Hello to all..

..The following is the first in a series of messages on Amateur Radio Field Day Weekend and providing information on the weather during this period. This is a tradition spanning over 25 years for Amateur Radio Operators involved with Field Day and the NWS Boston/Norton SKYWARN Program..
..For 2025, Amateur Radio Field Day Weekend will feature cooler than normal conditions Friday with showers and isolated thunderstorms. There is uncertainty whether portions of Southern New England will break into the warm sector on Saturday with more seasonable summer time warm temperatures and humidity or if we will remain in the cool sector with temperatures below normal. If we break into the warm sector, that would increase the threat for thunderstorms and even isolated severe weather potential while if we remain in the cool sector, showers would be around with isolated non-severe thunderstorm potential. Sunday will see summertime warmth and humidity with little to no rain..
..We will not see the extreme heat we saw earlier this week during Field Day Weekend but we could see normal summer-like conditions possibly on Saturday and especially on Sunday so staying hydrated and taking occasional breaks from strenuous activities is still advised particularly for this weekend..
..There will be the threat for showers and isolated thunderstorms and at this time, any severe weather potential is confined to Saturday and not certain as it will depend how much, if any, of our region gets into the warm sector. Not everyone will see a shower or thunderstorm and it will not be a washout but outdoor Amateur Radio Field Day weekend sites should have rain gear on hand for setup and during Field Day Operations.
..Any thunderstorms have lightning potential which is a safety hazard for all Amateur Radio Field Day sites. Amateur Radio Field Day sites are encouraged to guard their local Amateur Radio SKYWARN frequency and have multiple ways to receive weather alerts during the course of this Field Day weekend including by cell phone/Internet and NOAA Weather Radio..
..Amateur Radio Field Day Weekend is an annual event where Ham Operators across the United States setup at Emergency Operations Centers, field locations, home locations etc. to operate and test their equipment and skills and make as many radio contacts as possible during the weekend..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible on Saturday. At this time, there does not appear to be a need for any type of SKYWARN Self-Activation or Amateur Radio Call-Up Nets for Friday or Sunday but the situation will be monitored closely for any weather support to Amateur Radio Field Day sites as needed on those days..

Here are some links to information on these Amateur Radio Field Day Sites from across the region.

This year’s Amateur Radio Field Day Weekend will not see the extreme heat of earlier this week. Friday looks cool with some showers scattered about the area and the chance for an isolated non-severe thunderstorm. Saturday is a day of uncertainty on whether we remain in the cool sector with showers and isolated non-severe thunderstorms with an attendant lightning risk or if we warm sector with somewhat greater thunderstorm coverage and the potential for isolated severe weather. Sunday looks warm and humid and summerlike but little to no rain.

While not as hot as earlier in the week, it could be warm and humid on Saturday and especially Sunday for outdoor activities over the Field Day weekend period so Field Day sites should have plenty of liquids on hand and a place nearby to cool down whether it be a building or cars with AC to stay cool from the heat and take occasional breaks from strenuous activities. Heat tips and safety guidelines are also included in this message.

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

Amateur Radio Field Day sites are encouraged to bring a NOAA All-Hazards Weather Radio, monitor various cell phone weather apps where Amateur Operators may have those available and have a dedicated Ham Radio that can monitor their local SKYWARN frequency for their area as a best safety and preparedness practice as there is a threat for thunderstorm development and any thunderstorm can be a threat to the safety of Amateur Radio Field Day sites. Also sites that have mobile Internet capability can utilize that capability as a way to monitor for weather information. With Mobile Internet capability, utilizing Echolink to monitor the New England Reflector system on Echolink Conference *NEW-ENG3* Node: 9123/IRLP 9123 would be helpful as well. Please see the link below for the latest SKYWARN Frequency information for the region:
https://wx1box.org/southern-new-england-skywarn-frequency-list/

With the thunderstorm threat particularly for Saturday but possibly also Friday, now is the time to remind folks that lightning is a threat to any and all Amateur Radio Field Day sites. Remember your lightning safety tips and details on lightning safety can be seen at the following link and we have also added a link from the 2023 NWS Boston/Norton Lightning Safety Awareness Week and Public Information Statements on Lightning Safety and will update with this year’s statements in a future coordination message. See links below:
https://www.weather.gov/safety/lightning
https://wx1box.org/wp-content/uploads/2023/06/lightning_safety_awareness_PNS_2023.pdf

The next Severe Weather & Amateur Radio Field Day weekend coordination message will be posted by 10 AM Friday Morning. We hope the Amateur Radio community participating in Field Day has a great weekend!

Respectfully Submitted,

Uncategorized

Severe Weather & Heat Coordination Message #1 – Wednesday 6/25/25 Heat & Severe Weather Potential

June 25, 2025 Rob Macedo

Hello to all…

..One more day of intense heat and humidity for Southern New England but not as brutal as what was experienced Monday into Tuesday. A summary of 100+ degree readings from Amateur Radio and non-Amateur Radio SKYWARN Spotters can be seen below..
..A cold front moving through the area may bring isolated strong to severe thunderstorms to the area during the mid-afternoon into early evening. Coverage is expected to be isolated and only a few areas may experience that activity. Strong to damaging winds, hail, frequent lightning and heavy rainfall with brief urban and poor drainage flooding are the main threats. This front will bring an end to the heat and humidity for the region..
..A Heat Advisory is in effect through 7 PM Wednesday Evening for Northern Connecticut, Rhode Island except for Block Island, Essex, Middlesex, Southern Worcester, Suffolk, Norfolk, Bristol and Plymouth Counties of Massachusetts for heat indices of around 100 degrees. Use caution if outdoors in the heat for any extended period of time, take frequent breaks going into Air Conditioning if working outdoors and stay hydrated..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets will be done as needed for any strong to severe thunderstorms that can develop this Wednesday Afternoon into early evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

WX1BOX Amateur Radio/non-Amateur Radio Spotter Report Log of Reports:
https://wx1box.org/wp-content/uploads/2025/06/reports-100-degree-temps-6-24-25.pdf

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Heat Advisory Statement:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=NPW&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

Respectfully Submitted,

Uncategorized

Severe Weather & Heat Coordination Message #3 – Extreme Heat Sunday 6/22/25-Tuesday 6/24/25 & Severe Weather Potential Sunday 6/22/25 PM Thru Evening

June 22, 2025 Rob Macedo

Hello to all…

..Extreme heat is expected to setup over the region Sunday through Tuesday. The highest heat days are expected to be Monday and Tuesday. Sunday could have high heat potential as well but current shower activity from a remnant Mesoscale Convective System or (MCS) may keep temperatures a bit cooler for Sunday but it will still be hot and humid presuming sufficient clearing develops. The main severe weather impacts overnight from this MCS was felt in Central New York State with over 69,000 without power as of 730 AM this morning..
..Any severe weather potential for today has shifted to Sunday Afternoon and Evening, should be isolated in nature, and will be contingent on cloud cover clearing to allow for sufficient heating and destabilization and any boundaries or trigger to tap into a very unstable atmosphere presuming clearing develops. Greatest risk would be in Western and Central Massachusetts and Northern Connecticut..
..The Storm Prediction Center (SPC) has continued portions of Western and Central Massachusetts and Northern Connecticut in a Marginal Risk of Severe Weather this Sunday Afternoon through early evening. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the main threats. The threat again is likely to be isolated..
..An Extreme Heat Warning remains in effect from 11 AM Sunday to 8 PM Tuesday Evening for the entire NWS Norton Coverage area except for Cape Cod and the Islands and the East slopes of the Berkshires for heat indices of up to 110 degrees expected. A Heat Advisory remains in effect from 11 AM Sunday to 8 PM Tuesday for Western Franklin, Western Hampshire and Western Hampden Counties for heat indices up to 100 degrees expected. Use caution with any outdoor activities, drink plenty of liquids and take frequent breaks from the heat in Air Conditioning when possible..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible Sunday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

The headlines depict the current thinking on the Extreme Heat Warning and Heat Advisory. Sunday’s high temperature profile will be contingent on clearing from the remnant MCS that hit the Central New York area the hardest during the overnight hours. It will likely be cooler than originally thought for Sunday but still hot and humid. Monday and Tuesday are a high confidence on intense heat and humidity so use caution if doing any strenuous activities outdoors or in non-Air Conditioned environments, stay cool and drink plenty of liquids.

Turning our attention to the severe weather potential, we are once again humbled on how modeling of MCS’ remains a low confidence forecast. Models were ranging from Northern to Southern New England on potential severe weather impacts and the impacts ended up being felt in Central New York with wind damage, large hail and flash flooding. Over 69,000 were without power centered in Central NY where the complex went through in the NWS Binghamton NY coverage area. The remnant MCS has brought showers to Southern New England and cloud cover. This cloud cover could preclude any later Sunday severe weather potential unless it clears out by early afternoon.

For the Sunday Afternoon and Evening timeframe, the severe weather potential will be based on the following key factors:
1.) Clearing for destabilization after the remnant MCS has moved through the area.
2.) Available boundaries or triggers in the atmosphere assuming clearing can develop to allow for high instability to break the cap in the atmosphere.
3.) Ability of factors 1 and 2 to take advantage of an Elevated Mixed Layer or EML that should remain over the region through this evening. At this time, activity is expected to be isolated or the cap may be too strong to break for the marginal risk area but bears watching as any thunderstorm development could quickly become severe if any activity can break the cap.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible Sunday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. This will be the last coordination message on the severe weather potential for Sunday as we move to a monitoring mode. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-1 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Extreme Heat Warning/Heat Advisory Statement:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=NPW&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

Respectfully Submitted,

Uncategorized

Severe Weather & Heat Coordination Message #2 – Extreme Heat Sunday 6/22/25-Tuesday 6/24/25 & Severe Weather Potential Sunday 6/22/25 Early AM thru Evening

June 21, 2025 Rob Macedo

Hello to all…

**This coordination message is a small update to the morning message with some updates from SPC on the severe weather potential from their latest Day-2 Outlook and the latest NWS Boston/Norton Afternoon Area Forecast Discussion. It remains a lower confidence forecast on the severe weather potential.**

..After Friday’s strong to damaging wind event, attention turns to extreme heat Sunday to Tuesday and severe weather potential for overnight Saturday to Sunday Morning and possibly later Sunday Afternoon and Evening..
..Extreme heat is expected to setup over the region Sunday through Tuesday. The highest heat days are expected to be Monday and Tuesday. Sunday could have high heat potential as well but that will also be contingent on how a Mesoscale Convective System or (MCS) tracks and whether it affects Southern New England and lingers during the morning or tracks north of the region. This MCS will also have an impact on any severe weather potential that would occur during the overnight hours into Sunday Morning and any later Sunday Afternoon and Evening potential..
..The Storm Prediction Center (SPC) has continued portions of Western Massachusetts from roughly the CT Valley west in a marginal risk for severe weather today during the overnight period of the Day-1 Convective Outlook and has placed all of Southern New England in a marginal risk for severe weather for Sunday. The Sunday potential remains dependent on how the MCS tracks and whether its over or north of the region and how/if the atmosphere becomes favorable for severe weather later Sunday Afternoon. SPC has hinted depending on the MCS track and how things evolve that an upgrade to the marginal risk could occur for either Southern New England or the Mid-Atlantic..
..Confidence in severe weather potential overnight through Sunday remains lower than normal for this timeframe and there could be significant short term changes to the potential ranging from a very potent event to little or no activity. Trends will be monitored on this potential..
..Timeframe for severe weather potential would be from around 3 AM-11 AM Sunday Morning if the MCS tracks over the region and then mid-Sunday Afternoon to early evening for a possible second round of severe weather potential. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the main threats. Given the overnight timing, please have a way to alert yourself to severe weather during nocturnal hours if warnings are issued for your local area..
..An Extreme Heat Warning remains in effect from 11 AM Sunday to 8 PM Tuesday Evening for the entire NWS Norton Coverage area except for Cape Cod and the Islands and the East slopes of the Berkshires for heat indices of up to 110 degrees expected. A Heat Advisory remains in effect from 11 AM Sunday to 8 PM Tuesday for Western Franklin, Western Hampshire and Western Hampden Counties for heat indices up to 100 degrees expected. Use caution with any outdoor activities, drink plenty of liquids and take frequent breaks from the heat in Air Conditioning when possible..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible overnight tonight to late Sunday Morning and possibly again Sunday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

With fully leaved out trees and wind gusts of 40-50 MPH and isolated higher gusts, pockets of tree and wire damage occurred particularly in interior Massachusetts, Rhode Island and Northeast Connecticut. Any pictures/videos etc. from Friday’s high wind event are still welcome. Below is a summary on the wind gusts and wind damage reports received:

WX1BOX Amateur Radio Log:
https://wx1box.org/wp-content/uploads/2025/06/reports_6_20_25.pdf

The headlines depict the current thinking on the Extreme Heat Warning and Heat Advisory. While Sunday’s high temperature profile will be contingent on a severe weather complex known as a MCS as highlighted in the headlines, Monday and Tuesday are a high confidence on intense heat and humidity so use caution if doing any strenuous activities outdoors or in non-Air Conditioned environments, stay cool and drink plenty of liquids.

Turning our attention to the severe weather potential, this remains a lower than normal confidence for an event that could occur in roughly 12-24 hours. The setup which could feature a MCS has varying model solutions from no impact and it staying far to the north to a very potent event affecting Southern New England. The MCS activity will be during the overnight hours into Sunday Morning further complicating any preparedness. Having a means to be alerted to any Severe Thunderstorm or other warnings during the overnight via NOAA Weather Radio Alert and WEA is suggested for this timeframe. If no warnings are issued, alerts won’t occur and if there is a warning posted you can prepare as needed for the severe weather potential.

Any activity Sunday Afternoon and Evening will be predicated on the MCS track. A MCS track over the area could result in little to no activity later Sunday and may also reduce temperatures a bit due to lingering clouds and shower and thunderstorm activity. If the MCS stays to the north, then there could be severe weather potential later Sunday Afternoon and Evening but it would need a trigger to break a cap despite extreme instability from intense heating. This is a bit of a “nowcasting” situation that will be updated.

The key factors in the severe weather potential and when it occurs;
1.) The track of the MCS which will determine a round of overnight into mid to late Sunday Morning activity and how it affects later day activity.
2.) The intensity of the MCS as it brings what is known as an Elevated Mixed Layer or EML that brings in extreme instability and there will be strong wind shear present.
3.) Later day activity is dependent on the MCS track and if any thunderstorm activity can break the Cap and take advantage of extreme instability presuming intense heating and destabilization depending on the track of the MCS and if the track is over the region, how quickly it clears out.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible overnight tonight to early Sunday Morning and possibly again Sunday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. The next coordination message will be posted by 9 AM Sunday Morning. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-1 and Day-2 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Extreme Heat Warning/Heat Advisory Statement:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=NPW&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2025/day2otlk_20250621_1730.html

Respectfully Submitted,

Uncategorized

Severe Weather & Heat Coordination Message #1 – Extreme Heat Sunday 6/22/25-Tuesday 6/24/25 & Severe Weather Potential Sunday 6/22/25 Early AM thru Evening

June 21, 2025 Rob Macedo

Hello to all…

..After Friday’s strong to damaging wind event, attention turns to extreme heat Sunday to Tuesday and severe weather potential for overnight Saturday to Sunday Morning and possibly later Sunday Afternoon and Evening..
..Extreme heat is expected to setup over the region Sunday through Tuesday. The highest heat days are expected to be Monday and Tuesday. Sunday could have high heat potential as well but that will also be contingent on how a Mesoscale Convective System or (MCS) tracks and whether it affects Southern New England and lingers during the morning or tracks north of the region. This MCS will also have an impact on any severe weather potential that would occur during the overnight hours into Sunday Morning..
..The Storm Prediction Center (SPC) has placed portions of Western Massachusetts from roughly the CT Valley west in a marginal risk for severe weather today during the overnight period of the Day-1 Convective Outlook and has placed all of Southern New England in a marginal risk for severe weather for Sunday. The Sunday potential will depend on how the MCS tracks and whether its over or north of the region and how/if the atmosphere becomes favorable for severe weather later Sunday Afternoon..
..Confidence in severe weather potential overnight through Sunday is lower than normal for this timeframe and there could be significant short term changes to the potential ranging from a very potent event to little or no activity. Trends will be monitored on this potential..
..Timeframe for severe weather potential would be from around 3 AM-8 AM Sunday Morning if the MCS tracks over the region and then mid-Sunday Afternoon to early evening for a possible second round of severe weather potential. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the main threats. Given the overnight timing, please have a way to alert yourself to severe weather during nocturnal hours if warnings are issued for your local area..
..An Extreme Heat Warning is now in effect from 11 AM Sunday to 8 PM Tuesday Evening for the entire NWS Norton Coverage area except for Cape Cod and the Islands and the East slopes of the Berkshires for heat indices of up to 110 degrees expected. A Heat Advisory is in effect from 11 AM Sunday to 8 PM Tuesday for Western Franklin, Western Hampshire and Western Hampden Counties for heat indices up to 100 degrees expected. Use caution with any outdoor activities, drink plenty of liquids and take frequent breaks from the heat in Air Conditioning when possible..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible overnight tonight to early Sunday Morning and possibly again Sunday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

WX1BOX Amateur Radio Log:
https://wx1box.org/wp-content/uploads/2025/06/reports_6_20_25.pdf

Turning our attention to the severe weather potential, this is a lower than normal confidence for an event that could occur in roughly 18-30 hours. The setup which could feature a MCS has varying model solutions from no impact and it staying far to the north to a very potent event affecting Southern New England. The MCS activity will be during the overnight hours into Sunday Morning further complicating any preparedness. Having a means to be alerted to any Severe Thunderstorm or other warnings during the overnight via NOAA Weather Radio Alert and WEA is suggested for this timeframe. If no warnings are issued, alerts won’t occur and if there is a warning posted you can prepare as needed for the severe weather potential.

The key factors in the severe weather potential and when it occurs;
1.) The track of the MCS which will determine a round of overnight into early Sunday Morning activity and how it affects later day activity.
2.) The intensity of the MCS as it brings what is known as an Elevated Mixed Layer or EML that brings in extreme instability and there will be strong wind shear present.
3.) Later day activity is dependent on the MCS track and if any thunderstorm activity can break the Cap and take advantage of extreme instability presuming intense heating and destabilization depending on the track of the MCS and if the track is over the region, how quickly it clears out.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible overnight tonight to early Sunday Morning and possibly again Sunday Afternoon and Evening. Pictures and videos of storm damage, hail, and flooding can be sent as a reply to this email, via our WX1BOX Facebook, X and Bluesky feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Another coordination message will be posted by 11 PM Saturday Evening with an update. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-1 and Day-2 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Extreme Heat Warning/Heat Advisory Statement:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=NPW&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2025/day2otlk_20250621_0600.html

Respectfully Submitted,