Severe Severe Storm ● Closed

Special Marine Warning — Nantucket Sound; Vineyard Sound; Buzzards Bay; Rhode Island Sound; Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket; Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South

Event time: Last updated: Sep 6, 2026 United States
Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

Special Marine Warning issued August 23 at 1:07PM EDT until August 23 at 2:00PM EDT by NWS Boston/Norton MA

Measurements

Coordinates41.6129, -70.4107
RegionNantucket Sound; Vineyard Sound; Buzzards Bay; Rhode Island Sound; Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket; Coastal W
Expires2026-08-23T14:00:00-04:00
Nws UrgencyImmediate
Nws CertaintyLikely

Official source

Weather alert data courtesy of NOAA / National Weather Service

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by US National Weather Service.

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This event as JSON · API and licence

Source updated 60 days ago (Aug 23, 2026 17:58 UTC) · we last heard from US National Weather Service 32 seconds ago

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Earlier severe storm events in United States

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Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.