Alert archive / Wyoming / Snow Squall Warnings in 2024

Snow Squall Warning 9, NWS Cheyenne, WY

February 27, 2024Laramie County, Wyoming; Kimball County, Nebraska

NWS Cheyenne, WY issued this snow squall warning at Feb 27, 2024, 5:18 AM MST for Laramie County, Wyoming; Kimball County, Nebraska. It was in force for 27 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
Feb 27, 2024, 5:18 AM MST (12:18 UTC)
Expired
Feb 27, 2024, 5:45 AM MST
In force
27 min
Issued by
NWS Cheyenne, WY
Area
Storm-based polygon

Counties Kimball County, NE, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 52 km from the middle of the area, began a volume at 12:21 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 0.3 hours before the alert went out and 302 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, N. Platte/Lee Bi, NE at 12:00Z on 2024-02-27Temperature 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, N. Platte/Lee Bi, NE at 12:00Z on 2024-02-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939587897117Sfc1 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
2072 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
109 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 Feb 27, 4:12 AM MST, 1 hour 6 minutes earlier.

Area forecast discussion, Feb 27, 4:12 AM MST, 1 hour 6 minutes before
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Hazardous weather outlook, Feb 26, 2:31 PM MST, 14 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Cheyenne WY
231 PM MST Mon Feb 26 2024

NEZ002-003-019>021-054-055-095-096-WYZ101>119-272145-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
231 PM MST Mon Feb 26 2024

This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Widespread strong winds continue today with High Wind Warnings
running through this afternoon.

Fire weather threat continues this afternoon with Red Flag
Warnings in effect for the Nebraska Panhandle.

Colder temperatures and snow tonight into Tuesday with 1-2 feet
of snowfall expected in the Snowy and Sierra Madre Ranges.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Snow accumulations of Trace to 3 inches possible for lower
elevations Tuesday. Expecting single digit temperatures Tuesday
night.

High wind potential returns Tuesday night through Wednesday.

.Spotter information statement...

Spotter activation will not be needed.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 26, 6:39 PM MSTHigh Wind WatchCYSAlbany, Carbon, Laramie, Platte18 hr
Feb 27, 4:39 AM MSTSnow Squall WarningCYSAlbany, Laramie36 min
Feb 27, 12:31 PM MSTHigh Wind WarningCYSAlbany, Carbon, Laramie, Platte37 hr
Feb 27, 1:28 PM MSTSpecial Weather StatementCYSLaramie47 min

Nearby

Snow Squall Warnings in Wyoming, 2024Snow Squall Warnings in Nebraska, 2024Every 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.