Alert archive / Montana / Winter Storm Warnings in 2025
Winter Storm Warning 8, NWS Great Falls, MT
NWS Great Falls, MT issued this winter storm warning at Feb 15, 2025, 1:47 PM MST for 13 counties in Montana. It took effect at Feb 16, 2025, 6:00 AM MST. It was in force for 36 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
- Feb 15, 2025, 1:47 PM MST (20:47 UTC)
- In effect from
- Feb 16, 2025, 6:00 AM MST
- Expired
- Feb 17, 2025, 5:42 PM MST
- In force
- 36 hr
- Issued by
- NWS Great Falls, MT
Counties Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Fergus County, MT, Gallatin County, MT, Glacier County, MT, Jefferson County, MT, Judith Basin County, MT, Lewis and Clark County, MT, Meagher County, MT, Pondera County, MT, Teton County, MT, Toole County, MT
The radar
The Great Falls radar (KTFX), 20 km from the middle of the area, began a volume at 20:48 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.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 8.8 hours before the alert went out and 377 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 949 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 2:18 AM MST | Extreme Cold Watch | TFX | Blaine, Chouteau, Fergus, Glacier, Hill, Liberty and 3 more | 35 hr |
| Feb 15, 11:45 AM MST | Cold Weather Advisory | TFX | Blaine, Glacier, Hill, Liberty, Pondera, Toole | 25 hr |
| Feb 15, 1:47 PM MST | Winter Weather Advisory | TFX | Beaverhead, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 9 more | 3 days |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.