Alert archive / Nebraska / Snow Squall Warnings in 2021

Snow Squall Warning 3, NWS North Platte, NE

December 15, 2021Brown County, Cherry County, Nebraska

NWS North Platte, NE issued this snow squall warning at Dec 15, 2021, 3:46 PM CST for Brown County, Cherry County, Nebraska. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 15, 2021, 3:46 PM CST (21:46 UTC)
Expired: Dec 15, 2021, 4:15 PM CST
In force: 29 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Brown County, NE, Cherry County, NE

The radar

The North Platte radar (KLNX), 74 km from the middle of the area, began a volume at 21:48 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.

What was reported inside it

Time	Report	Where	Remark
Dec 15, 3:47 PM CST	NON-TSTM WND GST 58	Valentine, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.8 hours before the alert went out and 165 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: 2654 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

086 
WWUS53 KLBF 152146
SQWLBF

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service North Platte NE
346 PM CST Wed Dec 15 2021

NEC017-031-152215-
/O.NEW.KLBF.SQ.W.0003.211215T2146Z-211215T2215Z/
Cherry NE-Brown NE-
346 PM CST Wed Dec 15 2021

The National Weather Service in North Platte has issued a

* Snow Squall Warning for...
  Eastern Cherry County in north central Nebraska...
  West central Brown County in north central Nebraska...

* Until 415 PM CST/315 PM MST/.

* At 345 PM CST/245 PM MST/, dangerous snow squalls were located 
  over much of Cherry county, moving southeast at 25 mph.

  HAZARD...Extremely poor visibility in snow and blowing snow. Wind 
           gusts greater than 50 mph.

  SOURCE...Radar and webcams.

  IMPACT...Dangerous life-threatening travel.

* 

This includes the following highways...
 Highway 20 between mile markers 164 and 237.
 Highway 97 between mile markers 111 and 141.
 Highway 83 between mile markers 164 and 222.
 Highway 12 between mile markers 1 and 7.

Locations impacted include...
Valentine, Kilgore, Johnstown, Nenzel, Brownlee, Valentine National
Wildlife Refuge, Merritt Reservoir, Crookston, Wood Lake, Moon Lake,
Highway 83 crossing the North Loup River, Anderson Bridge State
Wildlife Management Area, Schlagel Creek State Wildlife Management
Area, Highway 97 crossing the Niobrara River, Big Alkali Lake State
Wildlife Management Area and Highway 83 crossing Goose Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4244 9980 4217 10057 4299 10123 4300 10055
TIME...MOT...LOC 2145Z 302DEG 6KT 4286 10057 

$$

JWS

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 15, 3:17 PM CST	Snow Squall Warning	LBF	Blaine, Custer, Logan, Thomas	43 min
Dec 15, 3:53 PM CST	Snow Squall Warning	LBF	Blaine, Cherry, Custer, Hooker, Logan, McPherson and 1 more	37 min
Dec 15, 4:05 PM CST	Snow Squall Warning	LBF	Brown, Cherry	40 min

Nearby

Snow Squall Warnings in Nebraska, 2021 Every snow squall warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.