Severe Weather Coordination Message #1 – Thursday PM/Evening 8/14/25 – Flood/Severe Weather Potential

Hello to all…

..A second cold front will approach Southern New England Thursday Afternoon and Evening setting the stage for thunderstorms with frequent lightning and heavy rainfall leading to localized urban and poor drainage flooding as the main threats but can’t rule out Isolated Strong to Severe Thunderstorms with strong to damaging winds and hail as well with the main threat area across central and eastern parts of Southern New England. Timeframe is in the 2-9 PM ET Thursday Afternoon and Evening timeframe..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible to likely for Thursday 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..

Wednesday 8/13/25 brought a round of isolated severe thunderstorms and localized flooding to the region. The complete log of reports can be seen here:
https://wx1box.org/wp-content/uploads/2025/08/reports_8_13_25.pdf

Heat and humidity though a bit cooler than Wednesday is expected today followed by a second cold front with the main threat being thunderstorms with heavy rainfall and localized flooding The headlines depict the current thinking. Key factors include:

1.) The timing and strength of the cold front into the area near the time of peak heating to take advantage of instability despite weak wind shear profiles.
2.) Cloud cover and amount of clearing to determine the level of instability. More clearing with higher instability increases the threat for thunderstorms with localized flooding and the isolated strong to severe thunderstorm risk.
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 Thursday 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. 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 only coordination message on the Thursday severe weather/flood potential. Below is the NWS Boston/Norton Area Forecast Discussion and Enhanced Hazardous Weather 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

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
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