Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 156, NWS North Platte, NE

August 28, 2021Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 28, 2021, 6:15 PM CDT for Custer County, Nebraska. It was in force for 45 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 28, 2021, 6:15 PM CDT (23:15 UTC)
Expired
Aug 28, 2021, 7:00 PM CDT
In force
45 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 North Platte radar (KLNX), 114 km from the middle of the area, began a volume at 23:19 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.

IssuedProductOfficeLasted
Aug 28, 3:57 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 80 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2021-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 269 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2021-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
269 J/kg
Mixed-layer CIN
-487 J/kg
Mixed-layer LCL
2050 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

649 
WUUS53 KLBF 282315
SVRLBF
NEC041-290000-
/O.NEW.KLBF.SV.W.0156.210828T2315Z-210829T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
615 PM CDT Sat Aug 28 2021

The National Weather Service in North Platte has issued a

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

* Until 700 PM CDT.

* At 614 PM CDT, a severe thunderstorm was located near Oconto, or 13
  miles south of Broken Bow, moving northeast at 10 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...
  Buckeye and Pressey State Wildlife Management Area. 

This includes Highway 2 between mile markers 281 and 284.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4109 9969 4123 9986 4141 9960 4121 9941
TIME...MOT...LOC 2314Z 236DEG 8KT 4122 9974 

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

$$

Sporer
1 follow-up statement
672 
WWUS53 KLBF 282349
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
649 PM CDT Sat Aug 28 2021

NEC041-290000-
/O.CON.KLBF.SV.W.0156.000000T0000Z-210829T0000Z/
Custer NE-
649 PM CDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR SOUTHEASTERN CUSTER COUNTY...

At 649 PM CDT, a severe thunderstorm was located 10 miles east of
Oconto, or 14 miles south of Broken Bow, moving east at 10 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...
Buckeye and Pressey State Wildlife Management Area. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4110 9967 4119 9973 4133 9956 4121 9941
TIME...MOT...LOC 2349Z 264DEG 10KT 4120 9956 

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

$$

Sporer

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 12:56 AM CDTSpecial Weather StatementLBFGarden49 min
Aug 28, 1:36 AM CDTSpecial Weather StatementLBFGarden, Grant39 min
Aug 28, 2:14 AM CDTSpecial Weather StatementLBFGarden, Grant46 min
Aug 28, 2:35 AM CDTSpecial Weather StatementLBFCherry25 min
Aug 28, 2:45 AM CDTSevere Thunderstorm WarningLBFCherry45 min
Aug 28, 2:59 AM CDTSpecial Weather StatementLBFGarden, Grant31 min
Aug 28, 3:27 AM CDTSevere Thunderstorm WarningLBFCherry, Keya Paha33 min
Aug 28, 3:30 AM CDTSpecial Weather StatementLBFGrant60 min
Aug 28, 3:32 AM CDTSpecial Weather StatementLBFCherry58 min
Aug 28, 3:58 AM CDTSpecial Weather StatementLBFKeya Paha62 min
Aug 28, 4:29 AM CDTSpecial Weather StatementLBFHooker61 min
Aug 28, 4:59 AM CDTSpecial Weather StatementLBFCherry46 min
Aug 28, 7:04 AM CDTSpecial Weather StatementLBFCherry56 min
Aug 28, 8:49 AM CDTSpecial Weather StatementLBFGrant41 min
Aug 28, 12:39 PM CDTSpecial Weather StatementLBFKeya Paha36 min
Aug 28, 1:24 PM CDTSpecial Weather StatementLBFBoyd51 min
Aug 28, 1:53 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt37 min
Aug 28, 4:17 PM CDTSevere Thunderstorm WarningLBFCuster43 min
Aug 28, 4:46 PM CDTSpecial Weather StatementLBFFrontier44 min
Aug 28, 5:02 PM CDTSpecial Weather StatementLBFCuster43 min
Aug 28, 5:12 PM CDTSpecial Weather StatementLBFLincoln33 min
Aug 28, 5:25 PM CDTSpecial Weather StatementLBFLoup50 min
Aug 28, 5:29 PM CDTSevere Thunderstorm WarningLBFCuster46 min
Aug 28, 5:30 PM CDTSpecial Weather StatementLBFFrontier30 min
Aug 28, 5:37 PM CDTSpecial Weather StatementLBFBlaine38 min
Aug 28, 5:46 PM CDTSevere Thunderstorm WarningLBFBlaine, Garfield, Holt, Loup, Rock59 min
Aug 28, 6:16 PM CDTSpecial Weather StatementLBFLogan29 min
Aug 28, 6:18 PM CDTSpecial Weather StatementLBFCuster42 min
Aug 28, 6:21 PM CDTSevere Thunderstorm WarningLBFCuster, Logan39 min
Aug 28, 6:35 PM CDTSevere Thunderstorm Warning Considerable damage threatLBFBlaine, Custer, Garfield, Holt, Loup, Rock40 min
Aug 28, 6:42 PM CDTSpecial Weather StatementLBFFrontier33 min
Aug 28, 6:57 PM CDTSevere Thunderstorm Warning Considerable damage threatLBFGarfield, Loup48 min
Aug 28, 6:57 PM CDTSevere Thunderstorm WarningLBFCuster, Logan48 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021Every 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.