Severe Weather & Heat Coordination Message #1 – Tuesday 5/19/26-Wednesday 5/20/26 Severe Weather & Heat Potential

Hello to all…

..Intense Heat & Humidity will set the stage for isolated to scattered strong to severe thunderstorms across portions of interior Southern New England Tuesday Afternoon into Tuesday Evening with perhaps a greater threat for severe thunderstorms over much of the region Wednesday Afternoon and evening as a strong cold front moves through the area..
..The Storm Prediction Center (SPC) has placed most of Southern New England north and west of the I-95 corridor in a marginal risk for severe weather Tuesday and pretty much all of Southern New England in a marginal risk for severe weather for Wednesday. Strong to damaging winds, hail, frequent lighting and heavy downpours leading to urban and poor drainage flooding are the main threats..
..A Heat Advisory is in effect from 11 AM Tuesday Morning to 8 PM Wednesday Evening for Providence, Kent Counties of Rhode Island, Northern Connecticut, Eastern Franklin, Eastern Hampshire, Eastern Hampden, Worcester, Middlesex, Essex, Norfolk, North-Central Bristol and North-Central Plymouth Counties of Massachusetts for heat indices of 96. Areas outside of the head advisory away from the coast will be hot and humid but below heat advisory criteria. All areas people working outdoors should drink plenty of liquids, take frequent breaks and people in the heat should seek cooler areas as needed..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are possible Tuesday Afternoon and Evening for severe weather potential if a severe thunderstorm warning is issued for a given area. Another more complete coordination message will be posted by 11 AM Tuesday AM on the severe weather potential for 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. Below is the NWS Boston/Norton Head Advisory Statement, Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-2 & Day-3 Convective Outlooks..

NWS Boston/Norton Heat Advisory 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_20260518_1730.html

SPC Day-3 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2026/day3otlk_20260518_1930.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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