Alert archive / Nebraska / Snow Squall Warnings in 2024

Snow Squall Warning 21, NWS Cheyenne, WY

December 30, 2024Kimball County, Nebraska; Laramie County, Wyoming

NWS Cheyenne, WY issued this snow squall warning at Dec 30, 2024, 3:53 PM MST for Kimball County, Nebraska; Laramie County, Wyoming. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 30, 2024, 3:53 PM MST (22:53 UTC)
Expired: Dec 30, 2024, 4:15 PM MST
In force: 22 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon

Counties Kimball County, NE, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 42 km from the middle of the area, began a volume at 22:55 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, 10.9 hours before the alert went out and 310 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: 1533 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

366 
WWUS55 KCYS 302253
SQWCYS

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Cheyenne WY
353 PM MST Mon Dec 30 2024

NEC105-WYC021-302315-
/O.NEW.KCYS.SQ.W.0021.241230T2253Z-241230T2315Z/
Kimball NE-Laramie WY-
353 PM MST Mon Dec 30 2024

The National Weather Service in Cheyenne has issued a

* Snow Squall Warning for...
  West central Kimball County in the Panhandle of Nebraska...
  Southeastern Laramie County in southeastern Wyoming...

* Until 415 PM MST.

* At 352 PM MST, a dangerous snow squall was located along a line
  extending from near Albin to near Meriden Rest Area, moving south
  at 20 mph.

  HAZARD...Intense bursts of heavy snow. Gusty winds leading to 
           blowing snow and visibility rapidly falling to less than 
           one-quarter mile. Wind gusts up to 35 mph.

  SOURCE...Radar indicated.

  IMPACT...Travel will become difficult and potentially dangerous 
           within minutes.

This includes the following highways...
 Interstate 80 in Wyoming between mile markers 377 and 402.
 Interstate 80 in Nebraska between mile markers 1 and 4.

Locations impacted include...
Pine Bluffs, Burns, Egbert, Hillsdale, and Pine Bluffs Municipal
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Reduce speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.

There is no safe place on a highway when a snow squall hits.
Visibility and traction are immediately lost in whiteout conditions,
making it difficult or impossible to slow down and avoid stopped
vehicles. Delay travel or safely exit the highway before the snow
squall arrives.

Serious injuries and deaths may result from people exiting their
vehicles during a snow squall. Drivers may not be able to see you or
stop! If you have been involved in an accident or pulled to the side
of the roadway, quickly exit your vehicle and move as far away from
the roadway as possible ONLY when it is safe to do so. Do not stand
along or near the roadway, since approaching vehicles may be unable
to maintain control.

&&

LAT...LON 4115 10455 4146 10442 4125 10395 4107 10399
      4111 10438
TIME...MOT...LOC 2252Z 003DEG 17KT 4136 10408 4151 10442 

SNOW SQUALL...RADAR INDICATED

$$

Cox

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 30, 4:14 PM MST	Snow Squall Warning Significant damage threat	CYS	Kimball	31 min
Dec 30, 3:43 PM MST	Special Weather Statement	CYS	Laramie	47 min
Dec 30, 4:47 PM MST	Snow Squall Warning	CYS	Laramie	28 min
Dec 30, 4:58 PM MST	Snow Squall Warning Significant damage threat	CYS	Laramie, Platte	32 min

Nearby

Snow Squall Warnings in Nebraska, 2024 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.