Severe Weather Coordination Message #2 – Wednesday 7/8/20 Severe Weather Potential

Hello to all…

..Isolated to Scattered Strong to Severe Thunderstorms are likely 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 continued a Marginal Risk for Severe Weather for Western, Central and Northeast Massachusetts and Northwest and North-Central Connecticut for Wednesday. It is noted that much of New Hampshire and Southern Maine are in a slight risk for severe weather. The threat timeframe for severe thunderstorms could be as early as 1 PM Wednesday but the most likely time range is now between 4-10 PM Wednesday..
..SKYWARN Self-Activation will monitor the severe weather potential for Wednesday Afternoon and Evening..

Not much change to the headlines regarding severe weather potential for Wednesday. The key factor for severe weather on Wednesday remains 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. It is noted that with this update much of New Hampshire and Southern Maine have been upgraded to a slight risk for severe weather where the impulse is tracking into that area more directly so the risk to northern and western portions of Southern New England will hinge on that impulse trigger affecting northern and western portions of Southern New England and if its far enough south to do so.

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-1 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-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.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
http://www.wx1box.org
Like us on Facebook – http://www.facebook.com/wx1box
Follow us on Twitter – http://twitter.com/wx1box