Alert archive / Wyoming / Snow Squall Warnings in 2024

Snow Squall Warning 7, NWS Cheyenne, WY

January 12, 2024Albany County, Carbon County, Wyoming

NWS Cheyenne, WY issued this snow squall warning at Jan 12, 2024, 5:37 PM MST for Albany County, Carbon County, Wyoming. It was in force for 38 min. 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 12, 2024, 5:37 PM MST (00:37 UTC)
Expired: Jan 12, 2024, 6:15 PM MST
In force: 38 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon

Counties Albany County, WY, Carbon County, WY

The radar

The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 00:34 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, 0.6 hours before the alert went out and 230 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 852 m above ground
0-6 km bulk shear: 100 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 297 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this snow squall warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this snow squall warning went out at Jan 12, 4:35 PM MST, 1 hour 2 minutes earlier.

Area forecast discussion, Jan 12, 4:35 PM MST, 1 hour 2 minutes before

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In the hours before

Local storm report, Jan 12, 12:06 PM MST, 5 hours 31 minutes before

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Special weather statement, Jan 12, 2:41 PM MST, 2 hours 56 minutes before

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Local storm report, Jan 12, 3:40 PM MST, 1 hour 57 minutes before

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Local storm report, Jan 12, 5:31 PM MST, 6 minutes before

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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 13, 2:20 AM MST	Winter Storm Warning	CYS	Albany, Carbon, Laramie	61 hr
Jan 13, 2:45 PM MST	Winter Weather Advisory	CYS	Albany, Carbon, Converse, Goshen, Laramie, Platte	44 hr

Nearby

Snow Squall Warnings in Wyoming, 2024 Every snow squall warning in 2024

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.