Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 182, NWS North Platte, NE

October 12, 2021Chase County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Oct 12, 2021, 6:02 PM MDT for Chase County, Perkins County, Nebraska. It was in force for 58 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: Oct 12, 2021, 6:02 PM MDT (00:02 UTC)
Expired: Oct 12, 2021, 7:00 PM MDT
In force: 58 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Chase County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 150 km from the middle of the area, began a volume at 00:03 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
Oct 12, 6:34 PM MDT	TSTM WND GST 60	3 Nne Lamar, 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
Oct 12, 2:46 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 113 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: 1669 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 320 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

905 
WUUS53 KLBF 130002
SVRLBF
NEC029-135-130100-
/O.NEW.KLBF.SV.W.0182.211013T0002Z-211013T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
602 PM MDT Tue Oct 12 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Western Perkins County in southwestern Nebraska...
  Chase County in southwestern Nebraska...

* Until 700 PM MDT.

* At 601 PM MDT, severe thunderstorms were located along a line
  extending from 6 miles southwest of Holyoke to 14 miles south of
  Pleasant Valley to 19 miles southwest of Lamar to near Wray, moving
  northeast at 45 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Imperial, Grant, Venango, Lamar, Champion, Crete, Chase, Brandon,
  Wanamaker State Wildfire Management Area and Church Grove
  Campground.

This includes Highway 61 between mile markers 41 and 69.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM MDT for southwestern
Nebraska.

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

A Tornado Watch remains in effect until 1000 PM MDT for southwestern
Nebraska.

&&

LAT...LON 4089 10205 4099 10194 4081 10160 4073 10157
      4035 10157 4035 10205
TIME...MOT...LOC 0001Z 226DEG 37KT 4050 10237 4041 10219 4032 10215
4013 10228

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

NMJ

2 follow-up statements

742 
WWUS53 KLBF 130028
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
628 PM MDT Tue Oct 12 2021

NEC029-135-130100-
/O.CON.KLBF.SV.W.0182.000000T0000Z-211013T0100Z/
Perkins NE-Chase NE-
628 PM MDT Tue Oct 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR WESTERN PERKINS AND WESTERN CHASE COUNTIES...

At 628 PM MDT, severe thunderstorms were located along a line
extending from near Venango to near Lamar to 17 miles southwest of
Champion, moving northeast at 35 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...
Imperial, Grant, Venango, Lamar, Crete, Chase, Brandon and Wanamaker
State Wildfire Management Area.

This includes Highway 61 between mile markers 42 and 69.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM MDT for southwestern
Nebraska.

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

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

&&

LAT...LON 4055 10157 4035 10204 4035 10205 4089 10205
      4099 10194 4081 10160 4073 10157
TIME...MOT...LOC 0028Z 217DEG 31KT 4074 10206 4051 10197 4036 10202 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

NMJ

033 
WWUS53 KLBF 130057
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
657 PM MDT Tue Oct 12 2021

NEC029-135-130107-
/O.EXP.KLBF.SV.W.0182.000000T0000Z-211013T0100Z/
Perkins NE-Chase NE-
657 PM MDT Tue Oct 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN PERKINS AND WESTERN
CHASE COUNTIES WILL EXPIRE AT 700 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 Tornado Watch remains in effect until 1000 PM MDT for southwestern
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 4055 10157 4035 10204 4035 10205 4089 10205
      4099 10194 4081 10160 4073 10157
TIME...MOT...LOC 0057Z 226DEG 37KT 4093 10180 4070 10171 4055 10176 

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 6:54 PM MDT	Special Weather Statement	LBF	Chase, Keith, Perkins	51 min
Oct 13, 12:45 AM MDT	High Wind Warning	LBF	Arthur, Chase, Cherry, Custer, Deuel, Garden and 9 more	16 hr
Oct 13, 12:30 PM MDT	Frost Advisory	LBF	Boyd, Garfield, Holt, Wheeler	21 hr
Oct 13, 12:30 PM MDT	Freeze Warning	LBF	Arthur, Blaine, Brown, Chase, Cherry, Custer and 16 more	21 hr

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.