Moderate Cold Wave ● Active
Winter Weather Advisory issued October 21 at 1:44PM PDT until October 22 at 11:00AM PDT by NWS Hanford 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...There is an 70% chance of 4 inches or more of snow along the
Tioga Pass and highway 120. There is a 60-80% chance for four
inches or more of snow above 8,000 feet in Tulare, Madera, and
Fresno Counties.
* WHERE...Above 8,000 feet in the Sierra Nevada.
* WHEN...Until 11 AM PDT Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will likely
become slick and hazardous.
* ADDITIONAL DETAILS...Snowfall will affect traffic across Tioga
Highway/Pass.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-21T22:00:00-07:00 |
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 21, 2026 20:45 UTC) · we last heard from WMO Alert Hub (national weather services) 42 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
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: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
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.