Severe Weather & Heat Coordination Message #1 – Wednesday 8/11/21 Through Friday 8/13/21 Severe Weather & Heat Wave Potential

Hello to all…

..Intense Heat and Humidity is expected Wednesday through Friday and possibly extending into Saturday. With the intense heat and humidity, it will bring with it the potential for isolated to scattered strong to severe thunderstorms through this period..
..A Heat Advisory is now in effect for the entire NWS Boston/Norton Coverage area except for Cape Cod and the Islands from 11 AM-8 PM Wednesday for heat indices between 95-100 degrees. An Excessive Heat Watch is in effect from Thursday Morning through Friday Evening for the entire NWS Boston/Norton Coverage area except for the eastern slopes of the Berkshires, South Coastal Massachusetts and Rhode Island and Cape Cod and the Islands for heat indices of 105-109 degrees. Heat advisories will likely be needed Thursday into Friday in areas not covered by the excessive heat watch. Use extreme caution if outside and needing to physically exert yourself. Drink plenty of liquids, take frequent breaks and seek cooler indoor locations wherever possible..
..There is low grade potential for severe weather in Western Massachusetts and Northwest Connecticut late Wednesday Afternoon into early evening with greater potential on Thursday where the Storm Prediction Center (SPC) has placed Western and Central Massachusetts and Northern Connecticut in a marginal risk for severe weather. Severe Weather potential beyond Thursday will be better defined in future outlooks..
..SKYWARN Self-Activation will monitor the severe weather potential during this heat wave Wednesday through Friday. Another coordination message will be posted by 11 AM Wednesday Morning if there is a change in heat headlines and for severe weather potential for Wednesday and Thursday as needed. Below is the NWS Boston/Norton Heat Advisory/Excessive Heat Watch Statement, NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-3 Convective Outlook..

NWS Boston/Norton Heat Advisory/Excessive Heat Watch Statement:

NWS Boston/Norton Area Forecast Discussion:

NWS Boston/Norton Enhanced Hazardous Weather Outlook:

SPC Day-3 Convective Outlook:

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)
Work Phone #: 508-346-2929 (8 AM-5 PM)
Email Address:
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