Moderate Cold Wave ● Active
Winter Weather Advisory issued October 23 at 4:18PM MDT until October 24 at 3:00AM 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 3 inches. Winds
gusting as high as 50 mph.
* WHERE...Fergus County below 4500ft and Judith Basin County and
Judith Gap.
* WHEN...Until 3 AM MDT Saturday.
* IMPACTS...Plan on reduced visibility and slippery road conditions.
The hazardous conditions will impact the Friday evening commute.
Gusty winds will create additional visibility reductions.
* ADDITIONAL DETAILS...Rain will change to wet snow late Friday
afternoon with a period of wet snow and gusty northwest winds
continuing through early Friday evening before precipitation
diminishes overnight. The combination of gusty winds and wet snow
after sunset will lead to lower visibility and snow or slush on
road surfaces will degrade travel conditions Friday evening.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Judith Basin County and Judith Gap; Fergus County below 4500ft |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-24T03:00:00-06:00 |
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 1 hour ago (Oct 23, 2026 22:20 UTC) · we last heard from WMO Alert Hub (national weather services) 24 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: Judith Basin County and Judith Gap; Fergus County below 4500ft
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.