Alert archive / Montana / Extreme Cold Warnings in 2025

Extreme Cold Warning 2, NWS Great Falls, MT

February 2, 20258 counties in Montana

NWS Great Falls, MT issued this extreme cold warning at Feb 2, 2025, 2:02 PM MST for 8 counties in Montana. It took effect at Feb 2, 2025, 5:00 PM MST. It was in force for 42 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 2, 2025, 2:02 PM MST (21:02 UTC)
In effect from
Feb 2, 2025, 5:00 PM MST
Expired
Feb 4, 2025, 11:00 AM MST
In force
42 hr
Issued by
NWS Great Falls, MT

Counties Blaine County, MT, Glacier County, MT, Hill County, MT, Lewis and Clark County, MT, Liberty County, MT, Pondera County, MT, Teton County, MT, Toole County, MT

The radar

The Great Falls radar (KTFX), 90 km from the middle of the area, began a volume at 21:03 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, 9.0 hours before the alert went out and 373 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.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2025-02-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2025-02-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1145 m above ground
0-6 km bulk shear
100 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
232 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 2, 1:45 AM MSTCold Weather AdvisoryTFXBlaine, Broadwater, Cascade, Chouteau, Fergus, Glacier and 9 more57 hr
Feb 2, 9:07 AM MSTWinter Storm WarningTFXBeaverhead, Blaine, Broadwater, Cascade, Chouteau, Fergus and 9 more3 days
Feb 2, 1:51 PM MSTWinter Weather AdvisoryTFXBeaverhead, Blaine, Broadwater, Cascade, Chouteau, Fergus and 12 more3 days

Nearby

Extreme Cold Warnings in Montana, 2025Every extreme cold 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.