Heat & Severe Weather Coordination Message #2 – Tuesday 6/30/26 Through Saturday 7/4/26 Heat & Severe Weather Potential

Hello to all…

..Intense Heat Wave Will Impact much of Southern New England Wednesday through Saturday. Severe Weather is possible any time late Tuesday PM to Saturday. 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 Excessive Heat Watch is now in effect Wednesday Morning through Saturday Evening for the entire NWS Norton Coverage Area except Cape Cod and the Islands for Heat Indices to 111 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..
..In addition, the Storm Prediction Center (SPC) has placed a marginal risk for severe weather Tuesday and Wednesday for Northwest Connecticut, Western and North Central Massachusetts for both Tuesday and Wednesday. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding would be the main threats. The threat will depend on impulses in their atmosphere and their track into the marginal risk area. Areas outside of the marginal risk area should also monitor with additional severe weather chances possible right through Saturday July 4th that will be detailed in future coordination messages..
..SKYWARN Self-Activation with Amateur Radio-Call Up Nets will monitor any severe weather potential Tuesday and Wednesday. 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 Tuesday by 100 PM. Below is the Excessive Heat Watch Statement, Area Forecast Discussion, Enhanced Hazardous Weather Outlook SPC Day-2, Day-3 Convective Outlooks and Heat Safety Tips..

NWS Boston/Norton Excessive Heat Watch 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-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2026/day2otlk_20260629_1730.html

SPC Day-3 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2026/day3otlk_20260629_1930.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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