Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 11, NWS North Platte, NE

May 13, 20214 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 13, 2021, 7:23 PM CDT for 4 counties in Nebraska. It was in force for 52 min. 2 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 13, 2021, 7:23 PM CDT (00:23 UTC)
Expired: May 13, 2021, 8:15 PM CDT
In force: 52 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Frontier County, NE, Hayes County, NE, Lincoln County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 140 km from the middle of the area, began a volume at 00:26 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 13, 7:44 PM CDT	HAIL 1	5 Sw Dickens, NE
May 13, 8:11 PM CDT	TSTM WND DMG	10 Nnw Curtis, NE	CALLER REPORTS TREES SNAPPED IN THE AREA. TIME ESTIMATED FROM RADAR.

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

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.4 hours before the alert went out and 214 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: 40 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 3130 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

260 
WUUS53 KLBF 140023
SVRLBF
NEC063-085-111-135-140115-
/O.NEW.KLBF.SV.W.0011.210514T0023Z-210514T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
723 PM CDT Thu May 13 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Frontier County in southwestern Nebraska...
  Southeastern Perkins County in southwestern Nebraska...
  Southwestern Lincoln County in southwestern Nebraska...
  Hayes County in southwestern Nebraska...

* Until 815 PM CDT/715 PM MDT/.

* At 722 PM CDT/622 PM MDT/, severe thunderstorms were located along
  a line extending from near Lake Maloney State Recreation Area to 6
  miles south of Wallace, moving south at 45 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated. At 713 PM CDT, Trained Spotters reported 
           two inch hail in Wallace.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Curtis, Hayes Center, Wallace, Wellfleet, Moorefield, Dickens, Lake
  Maloney State Recreation Area, Maywood, Grainton, Hansen Memorial
  Reserve State Wildlife Management Area, Hayes Center State Wildlife
  Management Area, Marengo and Somerset.

This includes the following highways...
 Interstate 80 in Nebraska between mile markers 170 and 172.
 Highway 83 between mile markers 34 and 77.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4080 10133 4104 10111 4114 10088 4068 10023
      4035 10082 4035 10110
TIME...MOT...LOC 0022Z 338DEG 37KT 4105 10084 4075 10121 

HAIL...1.50IN
WIND...60MPH
 
$$

Jurgensen

2 follow-up statements

679 
WWUS53 KLBF 140052
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
752 PM CDT Thu May 13 2021

NEC135-140102-
/O.CAN.KLBF.SV.W.0011.000000T0000Z-210514T0115Z/
Perkins NE-
752 PM CDT Thu May 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PERKINS COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has exited the 
warned area. Therefore, the warning has been cancelled.

LAT...LON 4076 10121 4091 10101 4104 10075 4068 10023
      4035 10082 4035 10110
TIME...MOT...LOC 0052Z 325DEG 40KT 4055 10087 

$$

NEC063-085-111-140115-
/O.CON.KLBF.SV.W.0011.000000T0000Z-210514T0115Z/
Frontier NE-Lincoln NE-Hayes NE-
752 PM CDT Thu May 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHWESTERN FRONTIER...SOUTHWESTERN LINCOLN AND HAYES
COUNTIES...

At 752 PM CDT, a severe thunderstorm was located 8 miles east of
Hayes Center, moving southeast at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Curtis, Hayes Center, Wellfleet, Moorefield, Dickens, Maywood,
Marengo, Hansen Memorial Reserve State Wildlife Management Area,
Hayes Center State Wildlife Management Area and Somerset.

This includes Highway 83 between mile markers 34 and 76.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4076 10121 4091 10101 4104 10075 4068 10023
      4035 10082 4035 10110
TIME...MOT...LOC 0052Z 325DEG 40KT 4055 10087 

HAIL...1.00IN
WIND...60MPH
 
$$

Jurgensen

438 
WWUS53 KLBF 140111
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
811 PM CDT Thu May 13 2021

NEC063-085-111-140120-
/O.EXP.KLBF.SV.W.0011.000000T0000Z-210514T0115Z/
Frontier NE-Lincoln NE-Hayes NE-
811 PM CDT Thu May 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN FRONTIER...
SOUTHWESTERN LINCOLN AND HAYES COUNTIES WILL EXPIRE AT 815 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

LAT...LON 4076 10121 4091 10101 4104 10075 4068 10023
      4035 10082 4035 10110
TIME...MOT...LOC 0110Z 270DEG 37KT 4038 10078 

$$

Jurgensen

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 7:03 PM CDT	Special Weather Statement	LBF	Lincoln	42 min
May 13, 7:14 PM CDT	Special Weather Statement	LBF	Custer	46 min
May 13, 7:48 PM CDT	Special Weather Statement	LBF	Dawson	27 min
May 13, 7:55 PM CDT	Special Weather Statement	LBF	Garden	50 min
May 13, 8:09 PM CDT	Special Weather Statement	LBF	Frontier, Hayes	81 min
May 13, 9:49 PM CDT	Special Weather Statement	LBF	Keith	41 min
May 13, 10:47 PM CDT	Special Weather Statement	LBF	Hayes	43 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.