Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 119, NWS North Platte, NE

August 14, 2021Chase County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 14, 2021, 6:59 AM MDT for Chase County, Perkins County, Nebraska. It was in force for 46 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: Aug 14, 2021, 6:59 AM MDT (12:59 UTC)
Expired: Aug 14, 2021, 7:45 AM MDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Damage threat: Considerable
Hail: 2.0 in
Wind: 50.0 mph

Counties Chase County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 156 km from the middle of the area, began a volume at 13:01 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, 1.0 hours before the alert went out and 92 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: 993 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted.

946 
WUUS53 KLBF 141259
SVRLBF
NEC029-135-141345-
/O.NEW.KLBF.SV.W.0119.210814T1259Z-210814T1345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
659 AM MDT Sat Aug 14 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  South central Perkins County in southwestern Nebraska...
  Northeastern Chase County in southwestern Nebraska...

* Until 745 AM MDT.

* At 658 AM MDT, a severe thunderstorm was located near Madrid 
  moving south at 15 mph.

  HAZARD...Two inch hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Madrid.

This includes Highway 61 between mile markers 46 and 64.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 4086 10169 4092 10152 4065 10135 4058 10168
TIME...MOT...LOC 1258Z 341DEG 15KT 4086 10160 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

CDC

1 follow-up statement

428 
WWUS53 KLBF 141319
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
719 AM MDT Sat Aug 14 2021

NEC029-135-141345-
/O.CON.KLBF.SV.W.0119.000000T0000Z-210814T1345Z/
Perkins NE-Chase NE-
719 AM MDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 AM MDT
FOR SOUTH CENTRAL PERKINS AND NORTHEASTERN CHASE COUNTIES...

At 719 AM MDT, a severe thunderstorm was located near Madrid, or 10
miles east of Grant, moving southeast at 20 mph.

HAZARD...Half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Madrid.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4092 10152 4065 10135 4060 10159 4088 10164
TIME...MOT...LOC 1319Z 322DEG 16KT 4081 10152 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 5:09 AM MDT	Special Weather Statement	LBF	Keith	51 min
Aug 14, 5:18 AM MDT	Severe Thunderstorm Warning	LBF	Keith	42 min
Aug 14, 5:43 AM MDT	Severe Thunderstorm Warning	LBF	Keith	47 min
Aug 14, 5:51 AM MDT	Severe Thunderstorm Warning	LBF	Keith	19 min
Aug 14, 5:56 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, McPherson	49 min
Aug 14, 6:23 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	37 min
Aug 14, 6:44 AM MDT	Special Weather Statement	LBF	McPherson	46 min
Aug 14, 7:35 AM MDT	Special Weather Statement	LBF	Keith	40 min
Aug 14, 7:44 AM MDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Perkins	31 min
Aug 14, 8:14 AM MDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Lincoln, Perkins	46 min
Aug 14, 8:33 AM MDT	Special Weather Statement	LBF	Perkins	42 min
Aug 14, 8:49 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	41 min
Aug 14, 8:59 AM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Perkins	26 min
Aug 14, 9:28 AM MDT	Severe Thunderstorm Warning	LBF	Perkins	47 min
Aug 14, 10:02 AM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Lincoln, Perkins	43 min
Aug 14, 10:44 AM MDT	Special Weather Statement	LBF	Hayes	46 min
Aug 14, 11:39 AM MDT	Special Weather Statement	LBF	Lincoln	51 min
Aug 14, 12:29 PM MDT	Special Weather Statement	LBF	Lincoln	46 min
Aug 14, 4:16 PM MDT	Special Weather Statement	LBF	Dawes	59 min
Aug 14, 4:21 PM MDT	Special Weather Statement	LBF	Sheridan	39 min
Aug 14, 4:26 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	49 min
Aug 14, 4:28 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	47 min
Aug 14, 4:56 PM MDT	Special Weather Statement	LBF	Sheridan	49 min
Aug 14, 5:01 PM MDT	Special Weather Statement	LBF	Sheridan	44 min
Aug 14, 5:06 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	39 min
Aug 14, 5:44 PM MDT	Special Weather Statement	LBF	Sheridan	46 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.