Moderate Cold Wave ● Active
Winter Weather Advisory issued October 23 at 8:41PM MDT until October 24 at 12:00AM MDT by NWS Great Falls MT, 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. Additional snow accumulations up to one inch. Winds
gusting as high as 35 mph.
* WHERE...Big Belt, Bridger and Castle Mountains, Gallatin and
Madison County Mountains and Centennial Mountains, and Ruby
Mountains and Southern Beaverhead Mountains.
* WHEN...Until midnight MDT tonight.
* IMPACTS...Plan on slippery road conditions.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Big Belt, Bridger and Castle Mountains; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-24T00:00:00-06:00 |
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 58 minutes ago (Oct 24, 2026 02:42 UTC) · we last heard from WMO Alert Hub (national weather services) 19 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: Big Belt, Bridger and Castle Mountains; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains
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.