Severe Weather Coordination Message #1 – Sunday Afternoon & Evening 6/30/24 – Severe Weather Potential

Hello to all…

..Isolated to Scattered Strong to Severe Thunderstorms are possible to likely across much of Southern New England Sunday Afternoon and Evening. Strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding are the main threats. The Storm Prediction Center (SPC) has all of Southern New England in a slight risk for severe weather for Sunday. Threat timeframe is between 12-8 PM Sunday..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets are likely as the potential strong to severe thunderstorms traverse the region Sunday Afternoon and Evening. Pictures and videos of storm damage can be sent as a reply to this message, via our WX1BOX Facebook and Twitter feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

We will be posting updated post severe weather coordination messages on the prior severe weather events over the course of this weekend. We appreciate and thank all Amateur Radio and non-Amateur Radio SKYWARN Spotters for the reports, pictures and videos during those events and if there is more data available, please feel free to send it along to us.

Turning our attention to Sunday’s severe weather potential, the headlines depict the current thinking and as we get closer to the severe weather potential, we will have a better idea of coverage and intensity. The key factors to dictating the coverage and intensity include:

1.) Amount of heating and destabilization we receive ahead of a strong cold front after any morning showers and thunderstorms clear the region.
2.) Shear profiles will be very strong. If heating and destabilization is somewhat less than expected, the strong winds aloft may offset to some extent lesser instability.
3.) Cold frontal timing which is currently expected to be in the ideal time range to maximize heating and destabilization.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets are likely as the potential strong to severe thunderstorms traverse the region Sunday Afternoon and Evening. Pictures and videos of storm damage can be sent as a reply to this message, via our WX1BOX Facebook and Twitter feeds or to the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. Another coordination message will be posted either by 11 PM Saturday Evening or 11 AM Sunday Morning depending on changes to the forecast and other factors. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-2 Convective Outlook:

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

SPC Day-2 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/archive/2024/day2otlk_20240629_0600.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)
Email Address: rmacedo@rcn.com
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