Severe Weather Coordination Message #1 – Sunday Afternoon and Evening 8/13/23 Severe Weather Potential

Hello to all…

..Isolated to Scattered Strong to Severe Thunderstorms are possible across Central and Eastern Massachusetts, Rhode Island and East-Central Connecticut this Sunday Afternoon and Evening between 2-8 PM. 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 has placed much of Eastern New England in a marginal risk for severe weather..
..SKYWARN Self-Activation will monitor the severe weather potential for this Sunday Afternoon and Evening..

On Saturday, severe weather was confined to Southwest and South-Central Connecticut between about 730-930 PM and extended westward into Southeast New York, Saturday Afternoon and Evening staying out of the NWS Norton coverage area. During Sunday Morning, strong thunderstorms produced some localized areas of 1″+ rain in less than an hour over the Falmouth area of Cape Cod and wind gusts in the 30-40 MPH range. These storms moved off the coast at 10 AM this morning with severe thunderstorms occurring over the coastal waters south of Block Island RI, Marthas Vineyard and Nantucket.

Another round of isolated to scattered strong to severe thunderstorms are possible across much of Eastern New England as the cold front sweeps through the region. The headlines depict the current thinking. The key factor for today is that there is much drier air ahead of this cold front which may limit coverage or intensity of thunderstorms but if this can be overcome, other instability and wind shear parameters would be favorable for isolated to scattered strong to severe thunderstorms. The coverage is expected to only be isolated to scattered in nature due to the inhibiting factor of dry air loft.

SKYWARN Self-Activation will monitor the severe weather potential for this Sunday Afternoon and Evening. This will be the only coordination message unless a significant update occurs and time allows for an update. 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:

NWS Boston/Norton Enhanced Hazardous Weather Outlook:

SPC Day-1 Convective Outlook:

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:
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