Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 99, NWS North Platte, NE

July 16, 2021Sheridan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 16, 2021, 7:13 PM MDT for Sheridan County, Nebraska. It was in force for 32 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
Jul 16, 2021, 7:13 PM MDT (01:13 UTC)
Expired
Jul 16, 2021, 7:45 PM MDT
In force
32 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
2.0 in
Wind
70.0 mph

County Sheridan County, NE

The radar

The Rapid City radar (KUDX), 145 km from the middle of the area, began a volume at 01:13 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 16, 7:55 PM MDTTSTM WND GST 60Hay Springs, 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
Jul 16, 3:55 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 1.2 hours before the alert went out and 139 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, Rapid City, SD at 00:00Z on 2021-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Rapid City, SD at 00:00Z on 2021-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3551 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

988 
WUUS53 KLBF 170113
SVRLBF
NEC161-170145-
/O.NEW.KLBF.SV.W.0099.210717T0113Z-210717T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
713 PM MDT Fri Jul 16 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Sheridan County in the Panhandle of Nebraska...

* Until 745 PM MDT.

* At 713 PM MDT, a severe thunderstorm was located 7 miles east of
  Chadron, moving southeast at 20 mph.

  HAZARD...Two inch hail and 70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Hay Springs, Intersection of Beaver Creek Road and White Clay Creek
  Road, Intersection of Highway 87 and Antelope Road, Walgren Lake
  State Recreation Area and Metcalf State Wildlife Management Area.

This includes Highway 20 between mile markers 74 and 84.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows!

&&

LAT...LON 4300 10265 4263 10257 4256 10277 4278 10277
      4279 10279 4300 10279
TIME...MOT...LOC 0113Z 331DEG 19KT 4284 10285 

HAIL...2.00IN
WIND...70MPH
 
$$

CDC
1 follow-up statement
550 
WWUS53 KLBF 170130
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
730 PM MDT Fri Jul 16 2021

NEC161-170145-
/O.CON.KLBF.SV.W.0099.000000T0000Z-210717T0145Z/
Sheridan NE-
730 PM MDT Fri Jul 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MDT
FOR NORTHWESTERN SHERIDAN COUNTY...

At 730 PM MDT, a severe thunderstorm was located 10 miles southwest
of White Clay, or 12 miles north of Hay Springs, moving southeast at
20 mph.

HAZARD...Two inch hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
Hay Springs, Intersection of Beaver Creek Road and White Clay Creek
Road, Intersection of Highway 87 and Antelope Road, Walgren Lake
State Recreation Area and Metcalf State Wildlife Management Area.

This includes Highway 20 between mile markers 74 and 84.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows.

&&

LAT...LON 4300 10265 4263 10257 4256 10277 4278 10277
      4279 10279 4290 10279
TIME...MOT...LOC 0130Z 305DEG 18KT 4286 10268 

HAIL...2.00IN
WIND...70MPH
 
$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 6:46 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan59 min
Jul 16, 7:42 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan63 min
Jul 16, 8:29 PM MDTSpecial Weather StatementLBFCherry46 min
Jul 16, 8:44 PM MDTSpecial Weather StatementLBFSheridan31 min
Jul 16, 9:13 PM MDTSpecial Weather StatementLBFCherry62 min
Jul 16, 9:15 PM MDTSpecial Weather StatementLBFArthur, Grant, Hooker60 min
Jul 16, 9:42 PM MDTSpecial Weather StatementLBFSheridan33 min
Jul 16, 10:11 PM MDTSpecial Weather StatementLBFBlaine, Brown, Logan, Thomas64 min
Jul 16, 10:14 PM MDTSpecial Weather StatementLBFArthur, Keith, McPherson61 min
Jul 16, 10:15 PM MDTSpecial Weather StatementLBFSheridan60 min
Jul 16, 10:26 PM MDTSpecial Weather StatementLBFGrant49 min
Jul 16, 11:10 PM MDTSpecial Weather StatementLBFArthur65 min
Jul 16, 11:12 PM MDTSpecial Weather StatementLBFBlaine63 min
Jul 16, 11:31 PM MDTSpecial Weather StatementLBFLincoln44 min
Jul 17, 12:07 AM MDTSpecial Weather StatementLBFCuster, Loup38 min
Jul 17, 12:12 AM MDTSpecial Weather StatementLBFLincoln63 min
Jul 17, 12:15 AM MDTSpecial Weather StatementLBFArthur45 min
Jul 17, 1:11 AM MDTSpecial Weather StatementLBFFrontier64 min
Jul 17, 1:13 AM MDTSpecial Weather StatementLBFGarfield, Wheeler62 min
Jul 17, 1:55 AM MDTAreal Flood AdvisoryLBFFrontier58 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.