Severe Weather Coordination Message #1 – Saturday PM & Evening 7/18/26 Severe Weather & Flash Flood Potential

Hello to all…

..A strong cold front will approach Southern New England Saturday Afternoon and evening setting the stage for potentially two rounds of isolated to scattered strong to severe thunderstorms one Saturday Mid-Afternoon and the other Saturday Evening. Much of Southern New England has severe weather potential but the greatest risk is over Western and Central Massachusetts, Connecticut, Rhode Island and into South Coastal Massachusetts..

..The Storm Prediction Center (SPC) has Western Massachusetts through Western and Central Connecticut in a slight risk for severe weather Saturday Afternoon and Evening and the rest of Southern New England along and north and west of the Cape Cod Canal in a marginal risk for severe weather. Threat potential timeframe is between 12 PM-12 AM Saturday. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the primary risks but even an isolated tornado cannot be ruled out particularly in the slight risk for severe weather area..

..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible Saturday Afternoon and Evening based on the severe weather and flash potential. 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. Another coordination message will be posted by 11 AM Saturday Morning..

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/2026/day2otlk_20260717_1730.html

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
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