Severe Severe Storm ● Active

Special Marine Warning issued October 31 at 7:57AM PDT until October 31 at 8:30AM PDT by NWS Seattle WA, United States of America

Event time: Oct 31, 2026 14:57 UTC Last updated: 21 hr ago 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.

SMWSEW

The National Weather Service in Seattle has issued a

* Special Marine Warning for...
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60
Nm...

* Until 830 AM PDT.

* At 757 AM PDT, a severe thunderstorm capable of producing
waterspouts was located 35 nm southwest of Point Grenville, moving
north at 10 knots.

HAZARD...Waterspouts.

SOURCE...Radar.

IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas.

* The severe thunderstorm will remain over mainly open waters.

Measurements

Coordinates	47.0300, -125.0380
Region	Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
Location Precision	polygon
Issuing Authority	United States of America — us-noaa-nws-en-marine
Cap Urgency	Immediate
Cap Certainty	Likely
Cap Expires	2026-10-31T08:30:00-07:00

Official source

Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.

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 WMO Alert Hub (national weather services).

View original report

This event as JSON · API and licence

Source updated 21 hours ago (Oct 31, 2026 14:58 UTC) · we last heard from WMO Alert Hub (national weather services) 1 minute ago

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Official authorities in United States

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Earlier severe storm events in United States

Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.

Special Marine Warning — Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM; Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM excluding the territorial waters of Bahamas Severe Severe Storm United States closed via NWS Oct 1, 2026 Special Marine Warning — Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM; Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM; Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM Severe Severe Storm United States closed via NWS Oct 1, 2026 Special Marine Warning — Biscayne Bay; Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM; Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM; Waters from De Severe Severe Storm United States closed via NWS Oct 1, 2026 Special Marine Warning — Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM; Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM excluding the territorial waters of Bahamas Severe Severe Storm United States closed via NWS Oct 1, 2026

Nearby & related events

M2.8 Earthquake — 31 km W of Yachats, Oregon Minor Earthquake active via USGS 5 hr ago Special Marine Warning issued October 31 at 8:25AM PDT until October 31 at 8:30AM PDT by NWS Seattle WA, United States of America Severe Severe Storm United States active via WMO 20 hr ago Special Marine Warning issued October 31 at 6:35AM PDT until October 31 at 6:45AM PDT by NWS Seattle WA, United States of America Severe Severe Storm United States active via WMO 22 hr ago Special Marine Warning issued October 31 at 6:19AM PDT until October 31 at 6:45AM PDT by NWS Seattle WA, United States of America Severe Severe Storm United States active via WMO 22 hr ago M2.6 Earthquake — 2 km ENE of Granite Falls, Washington Minor Earthquake active via USGS 1 day ago

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.