Alert archive / Montana / Winter Storm Warnings in 2012
Winter Storm Warning 1, NWS Billings, MT
NWS Billings, MT issued this winter storm warning at Jan 10, 2012, 8:42 PM MST for Carbon County, Stillwater County, Sweet Grass County, Montana. It was in force for 7 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 10, 2012, 8:42 PM MST (03:42 UTC)
- Expired
- Jan 11, 2012, 3:21 AM MST
- In force
- 7 hr
- Issued by
- NWS Billings, MT
Counties Carbon County, MT, Stillwater County, MT, Sweet Grass County, MT
The radar
The Billings radar (KBLX), 73 km from the middle of the area, began a volume at 03:39 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
Riverton, WY (KRIW), launched 00:00Z, 3.7 hours before the alert went out and 290 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
- 2189 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 123 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 Billings, MT wrote its last area forecast discussion before this winter storm warning went out at Jan 10, 3:55 PM MST, 4 hours 47 minutes earlier.
Area forecast discussion, Jan 10, 3:55 PM MST, 4 hours 47 minutes before
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</html>Hazardous weather outlook, Jan 10, 3:06 PM MST, 5 hours 36 minutes before
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</html>Nearby
Winter Storm Warnings in Montana, 2012Every winter storm warning in 2012
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.