Severe Weather Coordination Message #2 – Wednesday 7/17/19 Severe Weather & Flash Flood Potential

Hello to all…

..Isolated to scattered strong to severe thunderstorms are possible across much of Southern New England particularly along and south of the Mass Pike as a cold front with the remnants of Barry move across the region. Strong to damaging winds, frequent lightning and heavy rainfall with potential urban and poor drainage flooding to flash flooding are the primary threats with hail as a secondary threat..
..The Storm Prediction Center (SPC) has placed much of Southern New England except Cape Cod and the Islands in a slight risk for severe weather and Cape Cod and the Islands in a marginal risk for severe weather for Wednesday Afternoon and Evening..
..A Severe Thunderstorm Watch is now in effect until 10 PM for all Massachusetts except for the islands, Rhode Island and Connecticut for severe thunderstorm potential..
..A Flash Flood Watch is now in effect from Wednesday Afternoon through 11 PM Wednesday Evening for Northern Connecticut, Rhode Island, and all of Massachusetts except for the Islands for thunderstorms with the potential for 2″of rain per hour in thunderstorms and that can produce urban and poor drainage flooding to flash flooding..
..SKYWARN Activation with Ops at NWS Boston/Norton will commence by 300 PM Wednesday Afternoon likely lasting through 11 PM Wednesday Evening. Below is the NWS Boston/Norton Hazardous Weather Outlook, Enhanced Hazardous Weather Outlook, Flash Flood Watch, and SPC Day-1 Convective Outlook and Severe Thunderstorm Watch..

Heat and humidity will be prevalent across Southern New England today. A cold front will move into Southern New England near the time of peak heating. Satellite imagery shows good clearing in areas where there is some cloud cover and that should allow for reasonably strong instability. One key limitation will have is lack of cooling temperatures aloft but wind fields will increase through the day, heating that will allow for high instability and the atmosphere is becoming primed for isolated to scattered strong to severe thunderstorm development along with the potential of flash flooding for thunderstorms. The headlines depict the latest info.

SKYWARN Activation with Ops at NWS Boston/Norton will commence by 230-245 PM Wednesday Afternoon likely lasting through 11 PM Wednesday Evening. Below is the NWS Boston/Norton Hazardous Weather Outlook, Enhanced Hazardous Weather Outlook, Flash Flood Watch statement, and SPC Day-1 Convective Outlook and Severe Thunderstorm Watch statement.

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

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

NWS Boston/Norton Flash Flood Watch Statement:
https://kamala.cod.edu/ma/latest.wgus61.KBOX.html

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

SPC Severe Thunderstorm Watch Statement:
https://www.spc.noaa.gov/products/watch/ww0516.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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