Severe Weather Coordination Message #2 – Sunday PM & Evening 8/17/25 Severe Weather Potential
Hello to all…
..A cold front will approach Southern New England Sunday Afternoon and Evening setting the stage for Isolated to Scattered Strong to Severe Thunderstorms with strong to damaging winds, hail, frequent lightning and heavy rainfall leading to urban and poor drainage flooding as the main threats..
..The Storm Prediction Center (SPC) has placed much of Southern New England in a marginal risk for severe weather. Timeframe for severe weather is between 3-10 PM ET Sunday..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible to likely for 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..
One more day of heat and humidity before a cold front moves into the area Sunday Afternoon and Evening. The headlines depict the current thinking. Key factors include:
1.) The timing of the cold front into the area near the time of peak heating to take advantage of high instability despite weak wind shear profiles.
2.) Frontal forcing and instability to offset weaker wind wind shear, though wind shear is slightly stronger than the severe weather events earlier in the week, and a few other unfavorable severe weather parameters.
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 are possible to likely for 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 11 AM Sunday Morning. 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_20250816_1730.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
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