Severe Severe Storm ● Closed
Special Marine Warning — Cape Cod Bay; Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary; Massachusetts Bay and Ipswich Bay
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 13 at 2:37PM EDT until August 13 at 3:30PM EDT by NWS Boston/Norton MA
Measurements
| Coordinates | 41.8911, -70.2278 |
|---|---|
| Region | Cape Cod Bay; Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary; Massachusetts Bay and Ipswich Bay |
| Expires | 2026-08-13T15:30:00-04:00 |
| Nws Urgency | Immediate |
| Nws Certainty | Likely |
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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Source updated 67 days ago (Aug 13, 2026 19:12 UTC) · we last heard from US National Weather Service 23 seconds ago
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