Severe Weather Coordination Message #1 – Thursday 7/13/17 Severe Weather Potential

July 13, 2017 Rob Macedo Leave a comment

Hello to all…

..Isolated to scattered strong to severe thunderstorms are possible to likely again across sections of Southern New England particularly in Southwest Massachusetts from Hampshire and Hampden Counties of Massachusetts through Connecticut, Rhode Island, and Southeast Massachusetts, potentially confined to the South Coast this Thursday Afternoon and Evening. Strong to damaging winds, hail, frequent lightning and urban to poor drainage flooding and even flash flooding are the primary threats.
..The Storm Prediction Center (SPC) has placed much of Southern New England in a marginal to slight risk of severe weather for today through tonight but this threat is likely to be along and south/southwest of the cold frontal boundary..
..A Flash Flood Watch is in effect through 8 PM EDT for Northern Connecticut, Rhode Island, Bristol, Plymouth, Hampshire and Hampden Counties of Massachusetts for flash flooding of urban and poor drainage areas..
..SKYWARN Activation with Ops at NWS Taunton will commence by 200 PM EDT Thursday Afternoon for severe weather potential..

Yesterday brought one of the more significant severe weather and flash flood events of the spring-summer 2017 season to date with numerous wind damage and hail reports as well as flash flooding reports. Below is the NWS Taunton Public Information Statement, Local Storm Report and WX1BOX Facebook Photo Album from the event:

NWS Taunton Public Information Statement:
http://kamala.cod.edu/offs/KBOX/1707131457.nous41.html

NWS Taunton Local Storm Report:
http://kamala.cod.edu/offs/KBOX/1707130243.nwus51.html

For today, a cold frontal boundary is draped over South-Central Massachusetts through Rhode Island and Southeast Massachusetts just north of the south coast. This boundary divides much cooler air to the north and east from very warm and humid air to the south. There could be some question on whether parts of Southern New England will be deep enough into the warm sector but areas of Southwest Massachusetts through Connecticut, parts of southern Rhode Island and perhaps South Coastal Massachusetts will likely have a chance for isolated to scattered strong to severe thunderstorms similar to yesterday but over more southern and western parts of the area southwest of the cold front. The headlines above depict the situation well.

SKYWARN Activation with Ops at NWS Taunton will commence by 2 PM today. This will be the only coordination message as we shift into operations mode. Below is the SPC Day-1 Convective Outlook, SPC Mesoscale Convective Discussion, and the NWS Taunton Hazardous Weather Outlook and Experimental Enhanced Hazardous Weather Outlook:

SPC Day-1 Convective Outlook:

http://www.spc.noaa.gov/products/outlook/day1otlk.html

SPC Mesoscale Convective Discussion:

http://www.spc.noaa.gov/products/md/2017/md1303.html

NWS Taunton Flash Flood Watch Statement:

http://kamala.cod.edu/ma/latest.wgus51.KBOX.html

NWS Taunton Hazardous Weather Outlook:

http://kamala.cod.edu/ma/latest.flus41.KBOX.html

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

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Assistant 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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