Alert archive / Montana / Winter Storm Warnings in 2023
Winter Storm Warning 1, NWS Great Falls, MT
NWS Great Falls, MT issued this winter storm warning at Jan 26, 2023, 11:09 AM MST for 14 counties in Montana. It took effect at Jan 26, 2023, 5:00 PM MST. It was in force for 43 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
- Jan 26, 2023, 11:09 AM MST (18:09 UTC)
- In effect from
- Jan 26, 2023, 5:00 PM MST
- Expired
- Jan 28, 2023, 11:56 AM MST
- In force
- 43 hr
- Issued by
- NWS Great Falls, MT
Counties Beaverhead County, MT, 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, Madison County, MT, Meagher County, MT, Pondera County, MT, Teton County, MT
The radar
The Great Falls radar (KTFX), 65 km from the middle of the area, began a volume at 18:07 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, 6.2 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
- 1021 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jan 25, 4:50 PM MST, 18 hours 19 minutes earlier.
Area forecast discussion, Jan 25, 4:50 PM MST, 18 hours 19 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 |
|---|---|---|---|---|
| Jan 26, 11:09 AM MST | Winter Weather Advisory | TFX | Beaverhead, Blaine, Broadwater, Cascade, Chouteau, Fergus and 12 more | 61 hr |
Nearby
Winter Storm Warnings in Montana, 2023Every winter storm warning in 2023
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.