Moderate Extreme Weather ● Active
Special Weather Statement issued October 31 at 5:33AM PDT by NWS Portland OR, 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.
Areas of fog, some locally dense, have developed early this
morning the Willamette Valley, Upper Hood River Valley, and
southwest Washington lowlands, resulting in roadway visibility of
one mile or less. Morning commuters should expected to encounter
areas of rapidly changing visibility. Freezing fog is also
possible this morning where temperatures have fallen below
freezing.
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you. If walking or cycling, wear bright or
reflective clothing and carry a light to increase your visibility
to drivers.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Tualatin Valley; Inner Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane C |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Observed |
| Cap Expires | 2026-10-31T11:00:00-07:00 |
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 reportThis event as JSON · API and licence
Source updated 1 hour ago (Oct 31, 2026 12:35 UTC) · we last heard from WMO Alert Hub (national weather services) 37 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: Tualatin Valley; Inner Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane C
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
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.