Moderate Cold Wave ● Active

Winter Weather Advisory issued October 23 at 4:18PM MDT until October 23 at 9:00PM MDT by NWS Great Falls MT, United States of America

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

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 two inches. Winds
gusting as high as 35 mph.

* WHERE...Cascade County below 5000ft.

* WHEN...Until 9 PM MDT this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous
conditions will impact the Friday evening commute. Gusty winds
could create additional visibility reduction.

* ADDITIONAL DETAILS...Snow will continue through the rest of this
afternoon, then gradually diminish this evening.

Measurements

Coordinates39.9645, -100.8105
RegionCascade County below 5000ft
Location Precisioncountry
Issuing AuthorityUnited States of America — us-noaa-nws-en
Cap UrgencyExpected
Cap CertaintyLikely
Cap Expires2026-10-23T21:00:00-06:00

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 report

Also 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) 14 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: Cascade County below 5000ft

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.