Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 148, NWS North Platte, NE

August 26, 2021Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 26, 2021, 2:36 AM CDT for Custer County, Nebraska. It was in force for 25 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 26, 2021, 2:36 AM CDT (07:36 UTC)
Expired: Aug 26, 2021, 3:01 AM CDT
In force: 25 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Custer County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 07:36 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 00:00Z, 7.6 hours before the alert went out and 84 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: 1269 J/kg
Mixed-layer CIN: -210 J/kg
Mixed-layer LCL: 1061 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 304 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

550 
WUUS53 KLBF 260736
SVRLBF
NEC041-260830-
/O.NEW.KLBF.SV.W.0148.210826T0736Z-210826T0830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
236 AM CDT Thu Aug 26 2021

The National Weather Service in North Platte has issued a

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

* Until 330 AM CDT.

* At 235 AM CDT, a severe thunderstorm was located near Broken Bow,
  moving northeast at 15 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Broken Bow, Merna, Victoria Springs State Recreation Area, Lillian,
  Round Valley and Gates.

This includes the following highways...
 Highway 183 between mile markers 107 and 108.
 Highway 2 between mile markers 264 and 282.
 Highway 92 between mile markers 270 and 273.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4128 9970 4138 9990 4171 9972 4154 9936
TIME...MOT...LOC 0735Z 214DEG 13KT 4140 9975 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Buttler

1 follow-up statement

260 
WWUS53 KLBF 260801
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
301 AM CDT Thu Aug 26 2021

NEC041-260811-
/O.CAN.KLBF.SV.W.0148.000000T0000Z-210826T0830Z/
Custer NE-
301 AM CDT Thu Aug 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CUSTER COUNTY IS
CANCELLED...
                
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 has been cancelled.

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

LAT...LON 4128 9970 4138 9990 4171 9972 4154 9936
TIME...MOT...LOC 0758Z 214DEG 13KT 4148 9968 

$$

Buttler

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 12:57 AM CDT	Special Weather Statement	LBF	Custer	48 min
Aug 26, 1:29 AM CDT	Special Weather Statement	LBF	Custer	46 min
Aug 26, 2:09 AM CDT	Special Weather Statement	LBF	Garfield	51 min
Aug 26, 2:24 AM CDT	Special Weather Statement	LBF	Custer	51 min
Aug 26, 2:25 AM CDT	Special Weather Statement	LBF	Wheeler	50 min
Aug 26, 3:10 AM CDT	Special Weather Statement	LBF	Wheeler	50 min
Aug 26, 3:43 AM CDT	Special Weather Statement	LBF	Holt	47 min
Aug 26, 3:55 AM CDT	Special Weather Statement	LBF	Wheeler	50 min
Aug 26, 8:24 AM CDT	Areal Flood Advisory	LBF	Keith, Perkins	5 hr
Aug 26, 6:27 PM CDT	Special Weather Statement	LBF	Hayes	33 min
Aug 26, 6:50 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	40 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.