Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 27, NWS North Platte, NE

May 23, 2021Brown County, Cherry County, Keya Paha County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 23, 2021, 9:11 PM CDT for Brown County, Cherry County, Keya Paha County, Nebraska. It was in force for 49 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: May 23, 2021, 9:11 PM CDT (02:11 UTC)
Expired: May 23, 2021, 10:00 PM CDT
In force: 49 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, NE, Cherry County, NE, Keya Paha County, NE

The radar

The North Platte radar (KLNX), 80 km from the middle of the area, began a volume at 02:15 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 8:12 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.2 hours before the alert went out and 170 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: 930 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1216 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 161 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 7.0

Open this sounding in Storm Lab

The text

As transmitted.

952 
WUUS53 KLBF 240211
SVRLBF
NEC017-031-103-240300-
/O.NEW.KLBF.SV.W.0027.210524T0211Z-210524T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
911 PM CDT Sun May 23 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Eastern Cherry County in north central Nebraska...
  Western Brown County in north central Nebraska...
  Western Keya Paha County in north central Nebraska...

* Until 1000 PM CDT/900 PM MDT/.

* At 910 PM CDT/810 PM MDT/, severe thunderstorms were located along
  a line extending from 6 miles southwest of Littleburg to 10 miles
  north of Thedford, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Valentine, Johnstown, Brownlee, Valentine National Wildlife 
  Refuge, Elsmere, Norden, Wood Lake, Sparks, Willow Lake State 
  Wildlife Management Area, Long Lake State Wildlife Management 
  Area, Highway 83 crossing the North Loup River, Smith Falls State 
  Park,and Schlagel Creek State Wildlife Management Area.

This includes the following highways...
 Highway 20 between mile markers 191 and 237.
 Highway 97 between mile markers 133 and 141.
 Highway 83 between mile markers 158 and 222.
 Highway 12 between mile markers 1 and 39.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4300 9989 4209 10002 4210 10078 4300 10066
TIME...MOT...LOC 0210Z 267DEG 31KT 4297 10053 4213 10063 

HAIL...<.75IN
WIND...60MPH
 
$$

Jacobs

1 follow-up statement

422 
WWUS53 KLBF 240254
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
954 PM CDT Sun May 23 2021

NEC017-031-103-240302-
/O.EXP.KLBF.SV.W.0027.000000T0000Z-210524T0300Z/
Cherry NE-Brown NE-Keya Paha NE-
954 PM CDT Sun May 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHERRY...WESTERN BROWN
AND WESTERN KEYA PAHA COUNTIES WILL EXPIRE AT 1000 PM CDT/900 PM
MDT/...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 100 AM
CDT/midnight MDT/ for north central Nebraska.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
North Platte.

LAT...LON 4300 9989 4209 10002 4210 10078 4300 10066
TIME...MOT...LOC 0252Z 270DEG 31KT 4299 10004 4215 10014 

$$

Buttler

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:00 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant, Keith	45 min
May 23, 7:04 PM CDT	Special Weather Statement	LBF	Sheridan	41 min
May 23, 7:18 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Keith, Perkins	42 min
May 23, 7:26 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Grant, Sheridan	49 min
May 23, 7:39 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Grant, Hooker, McPherson	51 min
May 23, 7:57 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Keith, Perkins	63 min
May 23, 7:59 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	46 min
May 23, 8:24 PM CDT	Special Weather Statement	LBF	Hooker	51 min
May 23, 8:28 PM CDT	Areal Flood Warning	LBF	Keith, Perkins	3 hr
May 23, 8:30 PM CDT	Special Weather Statement	LBF	McPherson	45 min
May 23, 8:47 PM CDT	Special Weather Statement	LBF	Cherry	43 min
May 23, 8:54 PM CDT	Special Weather Statement	LBF	Thomas	51 min
May 23, 8:59 PM CDT	Special Weather Statement	LBF	Perkins	46 min
May 23, 9:14 PM CDT	Special Weather Statement	LBF	Logan	46 min
May 23, 9:17 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Perkins	43 min
May 23, 9:29 PM CDT	Special Weather Statement	LBF	Blaine, Logan	46 min
May 23, 9:36 PM CDT	Flash Flood Warning	LBF	Keith, Perkins	3 hr
May 23, 9:39 PM CDT	Special Weather Statement	LBF	Lincoln	51 min
May 23, 9:56 PM CDT	Special Weather Statement	LBF	Hayes	34 min
May 23, 10:02 PM CDT	Special Weather Statement	LBF	Brown, Keya Paha, Rock	43 min
May 23, 10:14 PM CDT	Special Weather Statement	LBF	Blaine, Logan, Loup	46 min
May 23, 10:19 PM CDT	Special Weather Statement	LBF	Frontier	41 min
May 23, 10:30 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	45 min
May 23, 10:33 PM CDT	Special Weather Statement	LBF	Lincoln	42 min
May 23, 10:43 PM CDT	Special Weather Statement	LBF	Brown, Keya Paha, Rock	47 min
May 23, 10:50 PM CDT	Special Weather Statement	LBF	Blaine, Loup	40 min
May 23, 11:14 PM CDT	Special Weather Statement	LBF	Custer, Frontier	46 min
May 23, 11:36 PM CDT	Special Weather Statement	LBF	Garfield, Loup	39 min
May 23, 11:59 PM CDT	Special Weather Statement	LBF	Dawson	31 min
May 24, 12:13 AM CDT	Special Weather Statement	LBF	Garfield, Wheeler	47 min
May 24, 6:18 PM CDT	Special Weather Statement	LBF	Frontier	42 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021 Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.