Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS North Platte, NE

June 25, 2021Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 25, 2021, 3:20 PM CDT for Custer County, Nebraska. It was in force for 40 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: Jun 25, 2021, 3:20 PM CDT (20:20 UTC)
Expired: Jun 25, 2021, 4:00 PM CDT
In force: 40 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Custer County, NE

The radar

The Grand Island radar (KUEX), 124 km from the middle of the area, began a volume at 20:22 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
Jun 25, 3:07 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.3 hours before the alert went out and 104 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: 612 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

490 
WUUS53 KLBF 252020
SVRLBF
NEC041-252100-
/O.NEW.KLBF.SV.W.0077.210625T2020Z-210625T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
320 PM CDT Fri Jun 25 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Custer County in central Nebraska...

* Until 400 PM CDT.

* At 320 PM CDT, a severe thunderstorm was located 7 miles northeast
  of Sumner, or 24 miles northeast of Lexington, moving northeast at
  25 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...
  Mason City, Block Hill Basin, Gavin Siding, Intersection of Highway
  183 and Cumro Road and Cumro.

This includes the following highways...
 Highway 183 between mile markers 73 and 86.
 Highway 2 between mile markers 297 and 307.
 Highway 92 between mile markers 301 and 308.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4105 9960 4140 9922 4139 9920 4105 9921
TIME...MOT...LOC 2020Z 227DEG 20KT 4105 9944 

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

NMJ

2 follow-up statements

421 
WWUS53 KLBF 252037
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
337 PM CDT Fri Jun 25 2021

NEC041-252100-
/O.CON.KLBF.SV.W.0077.000000T0000Z-210625T2100Z/
Custer NE-
337 PM CDT Fri Jun 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR SOUTHEASTERN CUSTER COUNTY...

At 336 PM CDT, a severe thunderstorm was located 9 miles northeast of
Miller, or 27 miles northwest of Kearney, moving northeast at 20 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...
Mason City, Block Hill Basin, Gavin Siding and Intersection of
Highway 183 and Cumro Road.

This includes the following highways...
 Highway 183 between mile markers 73 and 83.
 Highway 2 between mile markers 299 and 307.
 Highway 92 between mile markers 303 and 308.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4113 9943 4140 9922 4139 9920 4105 9921
      4105 9943
TIME...MOT...LOC 2036Z 244DEG 16KT 4106 9930 

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

NMJ

289 
WWUS53 KLBF 252055
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
355 PM CDT Fri Jun 25 2021

NEC041-252104-
/O.EXP.KLBF.SV.W.0077.000000T0000Z-210625T2100Z/
Custer NE-
355 PM CDT Fri Jun 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUSTER COUNTY
WILL EXPIRE AT 400 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
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 4113 9943 4140 9922 4139 9920 4105 9921
      4105 9943
TIME...MOT...LOC 2054Z 227DEG 20KT 4112 9921 

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 10:09 PM CDT	Special Weather Statement	LBF	Sheridan	51 min
Jun 24, 11:01 PM CDT	Special Weather Statement	LBF	Sheridan	59 min
Jun 25, 2:31 AM CDT	Areal Flood Advisory	LBF	Deuel, Garden	5 hr
Jun 25, 2:09 PM CDT	Special Weather Statement	LBF	Hayes	51 min
Jun 25, 3:00 PM CDT	Special Weather Statement	LBF	Custer	60 min
Jun 25, 3:13 PM CDT	Special Weather Statement	LBF	Custer	47 min
Jun 25, 3:15 PM CDT	Special Weather Statement	LBF	Frontier	60 min
Jun 25, 3:28 PM CDT	Special Weather Statement	LBF	Dawson	32 min
Jun 25, 3:53 PM CDT	Special Weather Statement	LBF	Custer	67 min
Jun 25, 4:50 PM CDT	Special Weather Statement	LBF	Garden	40 min
Jun 25, 4:53 PM CDT	Special Weather Statement	LBF	Custer	52 min
Jun 25, 5:27 PM CDT	Special Weather Statement	LBF	Garden	48 min
Jun 25, 5:34 PM CDT	Special Weather Statement	LBF	Wheeler	41 min
Jun 25, 5:41 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	49 min
Jun 25, 6:24 PM CDT	Special Weather Statement	LBF	Wheeler	51 min
Jun 25, 6:39 PM CDT	Special Weather Statement	LBF	Keith	66 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.