Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 157, NWS North Platte, NE

August 28, 2021Custer County, Logan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 28, 2021, 6:21 PM CDT for Custer County, Logan County, Nebraska. It was in force for 39 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
Aug 28, 2021, 6:21 PM CDT (23:21 UTC)
Expired
Aug 28, 2021, 7:00 PM CDT
In force
39 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Custer County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 52 km from the middle of the area, began a volume at 23:25 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

TimeReportWhereRemark
Aug 28, 6:35 PM CDTHAIL 1.52 Ene Stapleton, 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.

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.4 hours before the alert went out and 44 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.

303 
WUUS53 KLBF 282321
SVRLBF
NEC041-113-290000-
/O.NEW.KLBF.SV.W.0157.210828T2321Z-210829T0000Z/

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

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Eastern Logan County in west central Nebraska...
  West central Custer County in central Nebraska...

* Until 700 PM CDT.

* At 620 PM CDT, a severe thunderstorm was located over Gandy, or
  over Stapleton, 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...
  Stapleton, Gandy, Logan, Shanklin Bluff, Tarboz Lake and Hoagland. 

This includes the following highways...
 Highway 92 between mile markers 225 and 240.
 Highway 83 between mile markers 107 and 118.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4149 10060 4173 10031 4151 10009 4139 10046
      4139 10049
TIME...MOT...LOC 2320Z 232DEG 12KT 4148 10047 

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

$$

Sporer
3 follow-up statements
687 
WWUS53 KLBF 282332
SVSLBF

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

NEC041-113-290000-
/O.CON.KLBF.SV.W.0157.000000T0000Z-210829T0000Z/
Logan NE-Custer NE-
632 PM CDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR EASTERN LOGAN AND WEST CENTRAL CUSTER COUNTIES...

At 632 PM CDT, a severe thunderstorm was located over Gandy, or near
Stapleton, moving northeast at 15 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Stapleton, Gandy, Logan, Shanklin Bluff, Tarboz Lake and Hoagland. 

This includes the following highways...
 Highway 92 between mile markers 226 and 237.
 Highway 83 between mile markers 107 and 116.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4147 10058 4173 10031 4151 10009 4141 10045
      4140 10050 4142 10053
TIME...MOT...LOC 2332Z 232DEG 12KT 4151 10043 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Sporer
458 
WWUS53 KLBF 282345
SVSLBF

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

NEC041-113-290000-
/O.CON.KLBF.SV.W.0157.000000T0000Z-210829T0000Z/
Logan NE-Custer NE-
645 PM CDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR EASTERN LOGAN AND WEST CENTRAL CUSTER COUNTIES...

At 645 PM CDT, a severe thunderstorm was located near Gandy, or 7
miles northeast of Stapleton, moving northeast at 15 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Stapleton, Gandy, Logan, Shanklin Bluff, Tarboz Lake and Hoagland. 

This includes the following highways...
 Highway 92 near mile marker 228, and between mile markers 235 and
237.
 Highway 83 between mile markers 110 and 113.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4147 10053 4173 10031 4151 10009 4141 10045
TIME...MOT...LOC 2345Z 232DEG 12KT 4154 10038 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Sporer
455 
WWUS53 KLBF 282356
SVSLBF

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

NEC041-113-290005-
/O.EXP.KLBF.SV.W.0157.000000T0000Z-210829T0000Z/
Logan NE-Custer NE-
656 PM CDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN LOGAN AND WEST CENTRAL
CUSTER COUNTIES WILL EXPIRE AT 700 PM CDT...
    
The severe thunderstorm which prompted the warning remains severe 
and a new warning will be issued.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
central Nebraska.

LAT...LON 4147 10053 4173 10031 4151 10009 4141 10045
TIME...MOT...LOC 2355Z 232DEG 12KT 4155 10035 

$$

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, 6:15 PM CDTSevere Thunderstorm WarningLBFCuster45 min
Aug 28, 6:16 PM CDTSpecial Weather StatementLBFLogan29 min
Aug 28, 6:18 PM CDTSpecial Weather StatementLBFCuster42 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.