Severe Cold Wave ● Closed
Winter Storm Watch issued October 8 at 11:48PM MDT until October 11 at 6:00PM 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...Heavy wet snow possible. Total snow accumulations up to 6
inches below 5000 feet and between 6 and 12 inches possible above
5000 feet. Winds could gust as high as 45 mph.
* WHERE...Elkhorn and Boulder Mountains, Helena Valley, and Little
Belt and Highwood Mountains.
* WHEN...From Saturday evening through Sunday afternoon.
* IMPACTS...Travel could be very difficult, especially over mountain
passes. Back country conditions may be very dangerous. Wet snow and
gusty winds may down trees limbs and power lines.
* ADDITIONAL DETAILS...A snow band may develop across portions of
Central Montana leading to locally higher snowfall rates and
amounts.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Little Belt and Highwood Mountains; Helena Valley; Elkhorn and Boulder Mountains |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-10-09T18:15:00-06:00 |
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 WMO
This event as JSON · API and licence
Source updated 10 days ago (Oct 9, 2026 05:50 UTC) · we last heard from WMO Alert Hub (national weather services) 58 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: Little Belt and Highwood Mountains; Helena Valley; Elkhorn and Boulder 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.