Heat & Severe Weather Coordination Message #6 – Friday 7/3/26 Through Saturday 7/4/26 Heat & Severe Weather Potential

Hello to all…

..Isolated strong to severe thunderstorms once again occurred in portions of interior Massachusetts late Thursday Night into early Friday AM as a small complex of storms started in Southeast NY and traversed portions of Western and Central Massachusetts. The WX1BOX Amateur Radio Report log for Thursday Evening 7/2/26 into early Friday AM is included in this update along with report logs for the 7/1/26-7/2/26 and 6/30/26 severe weather events..
..Intense Heat Wave ongoing for much of Southern New England and continues through Saturday. Severe Weather potential for Friday PM/Evening overnight continues and while weather modeling seems to indicate the best threat for severe weather for Saturday 7/4/26 is southwest of our area, Southern New England should continue to monitor closely because as we saw late Thursday Evening, any thunderstorms that can develop and take advantage of the instability can quickly become severe..
..For Friday, Southern New England is in a slight risk for severe weather from roughly the CT River Valley of Western Massachusetts and Northern Connecticut with the rest of the region in a marginal risk for severe weather and Saturday has shifted marginal risk for severe weather southwest of area with a general thunderstorm risk over our area but this could change based on Friday severe thunderstorm complexes and other factors. These areas may shift and upgrade/downgrade in future updates..
..Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding would be the main threats.. Areas outside of the severe weather risk area should also monitor conditions today through Saturday with the greatest risk Friday Afternoon to Saturday Evening at this time..
..Timing any severe weather potential is uncertain and will depend on impulses in the atmosphere, how close those impulses come to Southern New England and how any thunderstorm/convective development the prior day affects the next day’s convective potential..
..An Extreme Heat Warning is in effect through 8 PM Saturday Evening for the entire NWS Norton Coverage Area except Cape Cod and the Islands for Heat Indices up to 115 degrees. A Heat Advisory is in effect through 8 PM Saturday Evening for Cape Cod and Marthas Vineyard for heat indices up to 104 degrees. Those working and recreating outside should take frequent breaks in Air Conditioned comfort and drink plenty of liquids. It is noted low temperatures are unlikely to get below 70 degrees and in a fairly large portion of the area may not get below 75 degrees meaning little relief to the heat during overnight hours..
..SKYWARN Self-Activation with Amateur Radio-Call Up Nets will monitor any severe weather potential Wednesday and Beyond. Pictures and videos of wind damage, hail, flooding etc. can be sent as a reply to this email, via our Facebook/X/Bluesky feeds or the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. The next coordination message will be posted on Saturday by 1100 AM..
..Below is the WX1BOX Amateur Radio Log of the Thursday Evening/Early Friday AM 7/2/26-7/3/26 severe weather event, Wednesday Evening/Thursday AM 7/1/26-7/2/26 severe weather event, Tuesday 6/30/26 severe weather event, Extreme Heat Warning/Heat Advisory Statement, Area Forecast Discussion, Enhanced Hazardous Weather Outlook, SPC Day-1 Convective Outlooks and NWS Heat Safety Tips..

WX1BOX Amateur Radio Log – Thursday Evening 7/2/26-Early Friday AM 7/3/26:
https://wx1box.org/wp-content/uploads/2026/07/reports_7_2_26.pdf

WX1BOX Amateur Radio Log – Late Wednesday Nite 7/1/26-Early Thursday AM 7/2/26:
https://wx1box.org/wp-content/uploads/2026/07/reports_7_1_26.pdf

WX1BOX Amateur Radio Log – Tuesday 6/30/26:
https://wx1box.org/wp-content/uploads/2026/07/reports_6_30_26.pdf

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 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

NWS Heat Safety Tips:
https://www.weather.gov/safety/heat

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Section Emergency Coordinator
Home Phone #: (508) 994-1875
Home/Data #: (508) 997-4503
Email Address: rmacedo@rcn.com
https://ares.ema.arrl.org
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