Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 87, NWS North Platte, NE

July 9, 2021Custer County, Lincoln County, Logan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 9, 2021, 8:59 PM CDT for Custer County, Lincoln County, Logan County, Nebraska. It was in force for 46 min. 8 reports 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
Jul 9, 2021, 8:59 PM CDT (01:59 UTC)
Expired
Jul 9, 2021, 9:45 PM CDT
In force
46 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Custer County, NE, Lincoln County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 96 km from the middle of the area, began a volume at 02:03 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

TimeReportWhereRemark
Jul 9, 9:00 PM CDTTSTM WND DMG10 S Arnold, NEDELAYED REPORT - 8IN DIAMETER TREE BRANCHES DOWN, FERTILIZER TANKS BLOWN OVER, GIANT CORN SILO WITH 20000 BUSHHELS CAVED IN.
Jul 9, 9:00 PM CDTTSTM WND DMGNorth Platte, NEROOF DAMAGE IN TOWN. PICTURE PROVIDED VIA SOCIAL MEDIA
Jul 9, 9:00 PM CDTTSTM WND GST 701 W North Platte, NESIGNIFICANT BLOWING DUST REDUCING VISIBILITY.
Jul 9, 9:04 PM CDTTSTM WND GST 674 Nne North Platte, NE
Jul 9, 9:07 PM CDTTSTM WND GST 686 Wnw Maxwell, NE
Jul 9, 9:08 PM CDTHAIL 0.5North Platte, NEMPING REPORT.
Jul 9, 9:09 PM CDTTSTM WND GST 71North Platte, NE62 KNOTS.
Jul 9, 9:20 PM CDTTSTM WND GST 782 Sse Maxwell, NELARGE TREE LIMBS DOWNED, SHINGLES TORN OFF, OUTDOOR FURNITURE DISPLACED

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
Jul 9, 3:16 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.0 hours before the alert went out and 9 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 00:00Z on 2021-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2799 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2021-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
2799 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1859 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.9

Open this sounding in Storm Lab

The text

As transmitted.

296 
WUUS53 KLBF 100159
SVRLBF
NEC041-111-113-100245-
/O.NEW.KLBF.SV.W.0087.210710T0159Z-210710T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
859 PM CDT Fri Jul 9 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Eastern Lincoln County in southwestern Nebraska...
  Southeastern Logan County in west central Nebraska...
  Southwestern Custer County in central Nebraska...

* Until 945 PM CDT.

* At 859 PM CDT, severe thunderstorms were located along a line
  extending from near Gandy to near Hershey, moving southeast at 40
  mph.

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

  SOURCE...Trained weather spotters.

  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...
  North Platte, Hershey, Arnold, Brady, Maxwell, Wellfleet, Gandy,
  Lake Maloney State Recreation Area, North Platte Airport, Keith,
  Logan, Cottonwood Canyon State Wildlife Management Area, Etna,
  Jeffrey Canyon State Wildlife Management Area, Tarboz Lake,
  Hoagland, Birdwood, Vroman and Somerset.

This includes the following highways...
 Highway 92 between mile markers 233 and 249.
 Highway 97 between mile markers 1 and 7.
 Interstate 80 in Nebraska between mile markers 165 and 207.
 Highway 83 between mile markers 56 and 110.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4118 10103 4157 10030 4105 9991 4105 10022
      4093 10023 4071 10082
TIME...MOT...LOC 0159Z 336DEG 33KT 4148 10035 4117 10093 

HAIL...1.00IN
WIND...70MPH
 
$$

CDC
1 follow-up statement
566 
WWUS53 KLBF 100230
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
930 PM CDT Fri Jul 9 2021

NEC113-100240-
/O.CAN.KLBF.SV.W.0087.000000T0000Z-210710T0245Z/
Logan NE-
930 PM CDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOGAN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
central and southwestern Nebraska.

LAT...LON 4107 10052 4130 10010 4105 9991 4105 10022
      4093 10023 4080 10057
TIME...MOT...LOC 0230Z 336DEG 33KT 4124 10021 4093 10079 

$$

NEC041-111-100245-
/O.CON.KLBF.SV.W.0087.000000T0000Z-210710T0245Z/
Lincoln NE-Custer NE-
930 PM CDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR SOUTHEASTERN LINCOLN AND SOUTHWESTERN CUSTER COUNTIES...

At 930 PM CDT, severe thunderstorms were located along a line
extending from 12 miles south of Arnold to 7 miles south of Lake
Maloney State Recreation Area, moving southeast at 40 mph.

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

SOURCE...Trained weather spotters.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Brady, Jeffrey Canyon State Wildlife Management Area, Cottonwood
Canyon State Wildlife Management Area, Etna and Vroman.

This includes Interstate 80 in Nebraska between mile markers 191 and
207.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4107 10052 4130 10010 4105 9991 4105 10022
      4093 10023 4080 10057
TIME...MOT...LOC 0230Z 336DEG 33KT 4124 10021 4093 10079 

HAIL...0.75IN
WIND...70MPH
 
$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 7:01 PM CDTSevere Thunderstorm WarningLBFGarden, Sheridan44 min
Jul 9, 7:45 PM CDTSevere Thunderstorm WarningLBFArthur, Garden, Grant45 min
Jul 9, 7:49 PM CDTSpecial Weather StatementLBFBlaine26 min
Jul 9, 8:06 PM CDTSpecial Weather StatementLBFMcPherson24 min
Jul 9, 8:11 PM CDTSpecial Weather StatementLBFLoup34 min
Jul 9, 8:30 PM CDTSpecial Weather StatementLBFLoup45 min
Jul 9, 8:31 PM CDTSpecial Weather StatementLBFMcPherson29 min
Jul 9, 8:45 PM CDTSpecial Weather StatementLBFCuster30 min
Jul 9, 8:58 PM CDTSevere Thunderstorm WarningLBFCuster47 min
Jul 9, 9:02 PM CDTSevere Thunderstorm WarningLBFCuster43 min
Jul 9, 9:04 PM CDTSpecial Weather StatementLBFHolt41 min
Jul 9, 9:08 PM CDTSpecial Weather StatementLBFWheeler52 min
Jul 9, 9:23 PM CDTSevere Thunderstorm WarningLBFHolt52 min
Jul 9, 9:27 PM CDTSevere Thunderstorm WarningLBFCuster33 min
Jul 9, 9:39 PM CDTSpecial Weather StatementLBFHolt36 min
Jul 9, 9:42 PM CDTSevere Thunderstorm WarningLBFCuster48 min
Jul 9, 9:50 PM CDTSevere Thunderstorm WarningLBFHolt40 min
Jul 9, 10:31 PM CDTSevere Thunderstorm WarningLBFSheridan59 min
Jul 9, 11:05 PM CDTSevere Thunderstorm WarningLBFArthur, Cherry, Garden, Grant, Sheridan55 min
Jul 9, 11:21 PM CDTSpecial Weather StatementLBFSheridan39 min
Jul 9, 11:53 PM CDTSevere Thunderstorm WarningLBFArthur, Cherry, Garden, Grant, Hooker, Keith and 3 more67 min
Jul 9, 11:57 PM CDTTornado WarningLBFArthur, Grant, Hooker, McPherson33 min
Jul 10, 12:45 AM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Hooker, Lincoln, Logan, McPherson and 1 more60 min
Jul 10, 1:20 AM CDTSpecial Weather StatementLBFLincoln40 min
Jul 10, 1:42 AM CDTSpecial Weather StatementLBFCuster48 min
Jul 10, 2:18 AM CDTSpecial Weather StatementLBFLincoln42 min
Jul 10, 2:22 AM CDTSevere Thunderstorm WarningLBFLincoln53 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.