Severe Weather & Heat Coordination Message #2 – Wednesday 8/11/21-Friday 8/13/21 Severe Weather & Heat 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 remains low grade potential for severe weather in Western Massachusetts and Northwest Connecticut late Wednesday Afternoon into early evening where the Storm Prediction Center (SPC) has now brought the marginal risk for severe weather into Berkshire and Western Franklin County Massachusetts and could extend as far west as Western Worcester County and down into Hartford and Tolland Counties of CT. The key factor for Wednesday is whether strong to severe thunderstorms stays west of our area or spills into western parts of our region..
..There remains greater severe weather 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 with areas in New York and Pennsylvania in a slight risk for severe weather which could spread east. A marginal risk for severe weather is also possible for Friday across Western and Central Massachusetts and Northern Connecticut as well and will depend on the evolution of convection on Thursday..
..The severe weather potential for Wednesday through Friday will be isolated to scattered in nature with strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding as the primary threats..
..SKYWARN Self-Activation will monitor the severe weather potential during this heat wave Wednesday through Friday. Another coordination message will be posted either by 11 PM Wednesday Evening or 11 AM Thursday Morning if there is a change in heat headlines and for severe weather potential for Thursday as needed and time allows for an update as we monitor severe weather potential for late Wednesday Afternoon and evening. 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-1, Day-2 and Day-3 Convective Outlooks..
NWS Boston/Norton Heat Advisory/Excessive Heat Watch Statement:
https://kamala.cod.edu/ma/latest.wwus71.KBOX.html
NWS Boston/Norton Area Forecast Discussion:
https://kamala.cod.edu/ma/latest.fxus61.KBOX.html
NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/box/ehwo
SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html
SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2021/day2otlk_20210811_1730.html
SPC Day-3 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day3otlk_0730.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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