Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS North Platte, NE

May 23, 2021Deuel County, Garden County, Grant County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 23, 2021, 5:09 PM MDT for Deuel County, Garden County, Grant County, Nebraska. It was in force for 51 min. 4 reports 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: May 23, 2021, 5:09 PM MDT (23:09 UTC)
Expired: May 23, 2021, 6:00 PM MDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Hail: 2.5 in
Wind: 70.0 mph

Counties Deuel County, NE, Garden County, NE, Grant County, NE

The radar

The North Platte radar (KLNX), 153 km from the middle of the area, began a volume at 23:13 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
May 23, 5:21 PM MDT	HAIL 1	Oshkosh, NE	CO-OP CALLED IN PEA TO QUARTER SIZED HAIL IN OSHKOSH.
May 23, 5:27 PM MDT	HAIL 2.75	8 Nnw Oshkosh, NE
May 23, 5:30 PM MDT	HAIL 2.75	10 Nnw Oshkosh, NE	FACEBOOK COMMENT AND PHOTO OF GOLFBALL, GOOSE EGG, AND BASEBALL SIZED HAIL.
May 23, 5:53 PM MDT	HAIL 1	14 Wnw Jensen Lake, NE

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

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, 12:06 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.2 hours before the alert went out and 155 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: 962 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 610 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

850 
WUUS53 KLBF 232309
SVRLBF
NEC049-069-075-240000-
/O.NEW.KLBF.SV.W.0019.210523T2309Z-210524T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
509 PM MDT Sun May 23 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southwestern Grant County in west central Nebraska...
  Garden County in the Panhandle of Nebraska...
  Northern Deuel County in the Panhandle of Nebraska...

* Until 600 PM MDT.

* At 508 PM MDT, a severe thunderstorm was located 10 miles west of
  Oshkosh, moving northeast at 55 mph.

  HAZARD...Tennis ball size hail and 70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Oshkosh, Lisco, Crescent Lake National Wildlife Refuge, Richardson
  Lake, Mumper, Rackett, Dogtown Flats, Deer Lake, Adams Flats,
  Britton Lake and Sugar Loaf Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 800 PM MDT for the Panhandle
of and west central Nebraska.

LAT...LON 4198 10253 4175 10194 4174 10195 4174 10198
      4171 10198 4119 10248 4123 10261 4139 10261
      4140 10264 4151 10264
TIME...MOT...LOC 2308Z 205DEG 47KT 4136 10254 

TORNADO...POSSIBLE
HAIL...2.50IN
WIND...70MPH
 
$$

Jacobs

1 follow-up statement

527 
WWUS53 KLBF 232334
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
534 PM MDT Sun May 23 2021

NEC049-232342-
/O.CAN.KLBF.SV.W.0019.000000T0000Z-210524T0000Z/
Deuel NE-
534 PM MDT Sun May 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DEUEL COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM MDT for the Panhandle
of and west central Nebraska.

LAT...LON 4198 10253 4175 10194 4174 10195 4174 10198
      4171 10198 4128 10239 4138 10261 4139 10261
      4140 10264 4151 10264
TIME...MOT...LOC 2332Z 205DEG 47KT 4165 10236 

$$

NEC069-075-240000-
/O.CON.KLBF.SV.W.0019.000000T0000Z-210524T0000Z/
Grant NE-Garden NE-
534 PM MDT Sun May 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MDT
FOR SOUTHWESTERN GRANT AND CENTRAL GARDEN COUNTIES...

At 532 PM MDT, a severe thunderstorm was located near Crescent Lake
National Wildlife Refuge, or 16 miles north of Oshkosh, moving
northeast at 55 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated. At 525 PM MDT Baseball size hail was 
         reported 8 miles north northwest of Oshkosh.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
Oshkosh, Lisco, Crescent Lake National Wildlife Refuge, Richardson
Lake, Mumper, Rackett, Dogtown Flats, Deer Lake, Adams Flats, Britton
Lake and Sugar Loaf Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4198 10253 4175 10194 4174 10195 4174 10198
      4171 10198 4128 10239 4138 10261 4139 10261
      4140 10264 4151 10264
TIME...MOT...LOC 2332Z 205DEG 47KT 4165 10236 

HAIL...1.50IN
WIND...70MPH
 
$$

Jacobs

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 8:17 PM MDT	Special Weather Statement	LBF	Chase	43 min
May 22, 8:21 PM MDT	Special Weather Statement	LBF	Lincoln	39 min
May 22, 8:49 PM MDT	Special Weather Statement	LBF	Perkins	41 min
May 22, 9:07 PM MDT	Special Weather Statement	LBF	Lincoln	23 min
May 22, 9:34 PM MDT	Special Weather Statement	LBF	Chase, Keith, Perkins	26 min
May 22, 10:00 PM MDT	Special Weather Statement	LBF	Chase, Keith, Perkins	45 min
May 22, 10:21 PM MDT	Areal Flood Advisory	LBF	Keith, Perkins	3 hr
May 22, 11:47 PM MDT	Special Weather Statement	LBF	Hooker, McPherson	58 min
May 23, 1:34 PM MDT	Special Weather Statement	LBF	Dawes	41 min
May 23, 1:57 PM MDT	Special Weather Statement	LBF	Garden	33 min
May 23, 2:26 PM MDT	Special Weather Statement	LBF	Sheridan	34 min
May 23, 3:00 PM MDT	Special Weather Statement	LBF	Sheridan	45 min
May 23, 4:33 PM MDT	Tornado Warning	LBF	Deuel, Garden	42 min
May 23, 4:37 PM MDT	Special Weather Statement	LBF	Sheridan	38 min
May 23, 5:16 PM MDT	Special Weather Statement	LBF	Sheridan	44 min
May 23, 5:38 PM MDT	Special Weather Statement	LBF	Deuel	52 min
May 23, 5:48 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Garden, Grant, Sheridan	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.