Severe Cold Wave ● Monitoring
Freeze Warning issued October 11 at 3:09PM PDT until October 12 at 9:00AM PDT by NWS Eureka CA, 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...Sub-freezing temperatures as low as 28 expected.
* WHERE...Northern Lake (Gravelly Valley Airport), Northeastern
Interior Mendocino (Round Valley, including Covelo), and Southern
Trinity (Hayfork Valley and Peanut, Hwy 36 corridor from about Mad
River to Forest Glen, and Ruth).
* WHEN...From 1 AM to 9 AM PDT Monday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Southern Trinity; Northeastern Interior Mendocino; Northern Lake |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-12T07:15:00-07:00 |
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 7 days ago (Oct 11, 2026 22:09 UTC) · we last heard from WMO Alert Hub (national weather services) 25 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: Southern Trinity; Northeastern Interior Mendocino; Northern Lake
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.
Hypothermia and frostbite prevention, home heating safety, and surviving being stranded in a vehicle.
Open Severe Cold & Winter Storm Safety →Earlier cold wave 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.