Severe Weather Coordination Message #1 – Wednesday 7/8/20 Severe Weather Potential

Hello to all…

..Isolated to Scattered Strong to Severe Thunderstorms are possible across Western, Central and Northeast Massachusetts and Northwest and North-Central Connecticut Wednesday Afternoon and Evening, strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding to flash flooding are the main threats..
..The Storm Prediction Center (SPC) has placed Western, Central and Northeast Massachusetts and Northwest and North-Central Connecticut in a Marginal Risk for severe weather for Wednesday. The threat timeframe for severe thunderstorms is between 2-9 PM Wednesday..
..SKYWARN Self-Activation will monitor the severe weather potential for Wednesday Afternoon and Evening..

After a day without severe weather, warm and humid conditions will return and with those warm and humid conditions will be the potential for isolated to scattered strong to severe thunderstorms during Wednesday Afternoon and evening across portions of Southern New England. The headlines depict the latest thinking and area. The key factor for severe weather on Wednesday will be how far south an impulse in the atmosphere will get to serve as a triggering mechanism for strong to severe thunderstorms within our coverage area. There will be sufficient heating and destabilization with marginally sufficient wind shear to support strong to severe thunderstorm development. Some of the storms may have slow movement which may allow for urban and poor drainage flooding to flash flooding to occur with some of these storms.

SKYWARN Self-Activation will monitor the severe weather potential for Wednesday Afternoon and Evening. Below is the NWS Boston/Norton Hazardous Weather Outlook, Enhanced Hazardous Weather Outlook and SPC Day-2 Convective Outlook:

NWS Boston/Norton Hazardous Weather Outlook:
http://kamala.cod.edu/ma/latest.flus41.KBOX.html

NWS Boston/Norton Experimental Enhanced Hazardous Weather Outlook:
https://www.weather.gov/box/ehwo

SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2020/day2otlk_20200707_1730.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)
Work Phone #: 508-346-2929 (8 AM-5 PM)
Email Address: rmacedo@rcn.com
http://ares.ema.arrl.org
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