Moderate Cold Wave ● Active
Winter Weather Advisory issued November 1 at 10:07AM MST until November 2 at 5:00PM MST by NWS Riverton WY, 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...Snow expected. Total snow accumulations 6 to 10 inches above
9000 feet. Total accumulations 10 to 15 inches at the highest
elevations near Cloud Peak. Winds gusting as high as 55 mph.
* WHERE...Bighorn Mountains Southeast.
* WHEN...From 1 AM to 5 PM MST Monday.
* IMPACTS...Travel could be difficult across mountain passes due to a
combination of falling snow and gusty winds.
* ADDITIONAL DETAILS...The greatest accumulations will occur across
the far northern range, north of Powder River Pass. Up to 2 inches
snow for Powder River Pass. Total snow accumulations 5 to 8 inches
at Granite Pass.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Bighorn Mountains Southeast |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-11-02T07:00:00-07:00 |
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 reportAlso reported by: WMO
This event as JSON · API and licence
Source updated 57 minutes ago (Nov 1, 2026 17:09 UTC) · we last heard from WMO Alert Hub (national weather services) 1 minute 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: Bighorn Mountains Southeast
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.