Severe Weather Coordination Message #2 – Sunday 8/23/26 – Severe Weather Potential
Hello to all…
..Heavy Rainfall is possible in portions of Connecticut, Rhode Island, Southeast Massachusetts Sunday Morning into early afternoon with a very low non-zero risk of an isolated strong to severe thunderstorm. As that moves out, there will be a risk of isolated to scattered strong to severe thunderstorms with strong to damaging winds, hail, frequent lightning and heavy downpours leading to urban and poor drainage flooding as the main threats. The Storm Prediction Center (SPC) has continued much of interior Southern New England in a marginal risk for severe weather anytime between 3-9 PM Sunday Afternoon and Evening..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets if warnings are issued will monitor for rain gauge totals Sunday Morning and any severe weather potential late Sunday Morning through Sunday Evening. Pictures and videos of wind damage, hail, flooding etc. can be sent as a reply to this email, via our Facebook/X/Bluesky feeds or the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..
As of 1040 AM Sunday Morning, Doppler Radar shows an area of rainfall across Central Massachusetts, Central Connecticut through south of Long Island, NY moving northeastward with some instability convective showers out ahead of this area of rain. It is noted that there were special marine warnings south of Long Island New York. This convection may pose a low, non-zero risk of an isolated strong to severe thunderstorm in portions of Southeast New England through early afternoon. Will also monitor some of the heavier rainfall associated with this activity.
As of 1040 AM Sunday Morning, Satellite imagery is showing breaks of sunshine ahead of an upper level low pressure system and front that will swing through Southern New England in the mid-afternoon to evening hours. The headlines depict current thinking key factors include and remain:
1.) Level of instability over the area depending on clearing which looks a bit more robust than previously modeled or if extensive cloud cover regenerates after initial rain this morning moves through.
2.) Strong wind shear compensating for limited instability along with cooling aloft reaching the marginal risk area during the afternoon and evening hours.
SKYWARN Self-Activation with Amateur Radio Call-Up Nets if warnings are issued will monitor for rain gauge totals Sunday Morning and any severe weather potential late Sunday Morning through Sunday Evening. Pictures and videos of wind damage, hail, flooding etc. can be sent as a reply to this email, via our Facebook/X/Bluesky feeds or the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. This will be the last coordination message on this severe weather potential as we shift to operations mode. Below is the NWS Boston/Norton Area Forecast Discussion, Enhanced Hazardous Weather Outlook and SPC Day-1 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-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
Home/Data #: (508) 997-4503
Email Address: rmacedo@rcn.com
https://ares.ema.arrl.org
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