Alert archive / Montana / Winter Storm Warnings in 2025
Winter Storm Warning 20, NWS Great Falls, MT
NWS Great Falls, MT issued this winter storm warning at Dec 11, 2025, 12:59 PM MST for 13 counties in Montana. It took effect at Dec 12, 2025, 12:00 AM MST. It was in force for 29 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 11, 2025, 12:59 PM MST (19:59 UTC)
- In effect from
- Dec 12, 2025, 12:00 AM MST
- Expired
- Dec 13, 2025, 5:00 AM MST
- In force
- 29 hr
- Issued by
- NWS Great Falls, MT
Counties Blaine County, MT, Cascade County, MT, Chouteau County, MT, Fergus County, MT, Glacier County, MT, Hill County, MT, Judith Basin County, MT, Lewis and Clark County, MT, Liberty County, MT, Meagher County, MT, Pondera County, MT, Teton County, MT, Toole County, MT
The radar
The Great Falls radar (KTFX), 51 km from the middle of the area, began a volume at 20:02 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Great Falls, MT wrote its last area forecast discussion before this winter storm warning went out at Dec 10, 4:48 PM MST, 20 hours 11 minutes earlier.
Area forecast discussion, Dec 10, 4:48 PM MST, 20 hours 11 minutes before
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</html>The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 11, 12:59 PM MST | Winter Weather Advisory | TFX | Broadwater, Gallatin, Glacier, Jefferson, Lewis and Clark, Madison and 3 more | 40 hr |
| Dec 11, 1:01 PM MST | Cold Weather Advisory | TFX | Blaine, Glacier, Hill, Liberty, Pondera, Toole | 21 hr |
Nearby
Winter Storm Warnings in Montana, 2025Every winter storm warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.