Storm Coordination Message #1 – Late Friday Night 5/30/25-5/31/25 – Heavy Rainfall & Flood Potential

Hello to all…

..Soaking heavy rainfall with heavy downpours and embedded thunderstorms are expected with the heaviest amounts in portions of Western Massachusetts and Northern Connecticut with rainfall amounts of 2-3″ with isolated higher amounts and the potential for urban and poor drainage flooding and possibly some minor river and stream flooding. For the rest of Southern New England, rainfall amounts of 0.50″-1.5″ with isolated higher amounts. The heaviest rainfall is late tonight through late Saturday Morning but another round of showers and thunderstorms could bring localized heavy rainfall late Saturday Afternoon and Evening to the region..
..The potential for severe weather is low but given the strength of the storm system, an isolated severe thunderstorm with strong to damaging winds can’t be ruled out with the two round of heavy rainfall and embedded thunderstorms if more instability develops than expected..
..SKYWARN Self-Activation will monitor for rain gauge, flooding and wind damage/severe weather related reports late tonight through Saturday Morning and also Saturday late PM/Evening. This will be the only coordination message unless a significant change to the situation occurs and time allows for an update. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and Rainfall Map..

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

NWS Norton Rainfall Map:
https://wx1box.org/wp-content/uploads/2025/05/NWS-Norton-Rainfall-Map-5-31-25.jpg

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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