Moderate Extreme Weather ● Active
Dense Fog Advisory issued October 31 at 8:29PM PDT until November 1 at 10:00AM PST by NWS Seattle WA, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Eastern Kitsap County, City of Seattle, Downtown Everett /
Marysville Area, Eastside, Lowlands of Lewis and Southern Thurston
Counties, Lowlands of Pierce and Southern King Counties, Olympia
and Southern Puget Sound, and Shoreline / Lynnwood / South Everett
Area.
* WHEN...From 1 AM to 10 AM PST Sunday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Dense fog is expected to develop tonight and
continue into Sunday morning for areas of Puget Sound. Localized
freezing fog may also occur as temperatures fall into the 30s for
many locations.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Downtown Everett / Marysville Area; Shoreline / Lynnwood / South Everett Area; Eastside; City of Seattle; Lowlands of Pierce and Southern King Counties; Ol |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-11-01T04:00:00-08:00 |
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 reportAlso reported by: WMO
This event as JSON · API and licence
Source updated 1 hour ago (Nov 1, 2026 03:30 UTC) · we last heard from WMO Alert Hub (national weather services) 53 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Downtown Everett / Marysville Area; Shoreline / Lynnwood / South Everett Area; Eastside; City of Seattle; Lowlands of Pierce and Southern King Counties; Ol
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
When thunder roars, go indoors — lightning risk outdoors, in vehicles, and first aid for strike victims.
Open Lightning Safety Guide →Earlier extreme weather 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.
Nearby & related events
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