Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 94, NWS North Platte, NE

July 9, 20215 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 9, 2021, 10:05 PM MDT for 5 counties in Nebraska. It was in force for 55 min. 3 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, 10:05 PM MDT (04:05 UTC)
Expired: Jul 9, 2021, 11:00 PM MDT
In force: 55 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 80.0 mph

Counties Arthur County, NE, Cherry County, NE, Garden County, NE, Grant County, NE, Sheridan County, NE

The radar

The North Platte radar (KLNX), 158 km from the middle of the area, began a volume at 04:07 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

Time	Report	Where	Remark
Jul 9, 10:30 PM MDT	TSTM WND GST 70	Ellsworth, NE	ESTIMATED AT LEAST 70 MPH WINDS... TREES BENT OVER AND LOST POWER
Jul 9, 10:35 PM MDT	TSTM WND GST 69	Crescent Lake Nwr, NE
Jul 9, 10:50 PM MDT	TSTM WND DMG	12 Sse Ashby, NE	SEVERAL ELM TREES UPROOTED AND A WINDMILL IS DAMAGED.

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.

Issued	Product	Office	Lasted
Jul 9, 2:16 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 9, 8:06 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.1 hours before the alert went out and 182 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: 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.

355 
WUUS53 KLBF 100405
SVRLBF
NEC005-031-069-075-161-100500-
/O.NEW.KLBF.SV.W.0094.210710T0405Z-210710T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
1005 PM MDT Fri Jul 9 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Arthur County in west central Nebraska...
  Southwestern Cherry County in north central Nebraska...
  Grant County in west central Nebraska...
  Garden County in the Panhandle of Nebraska...
  Southern Sheridan County in the Panhandle of Nebraska...

* Until 1100 PM MDT.

* At 1003 PM MDT, severe thunderstorms were located along a line
  extending from 21 miles south of Rushville to near Antioch to 7
  miles northeast of Angora, moving southeast at 60 mph.

  These are very dangerous storms.

  HAZARD...80 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be heavily damaged. Expect 
           considerable damage to roofs, windows, and vehicles. 
           Extensive tree damage and power outages are likely.

* Locations impacted include...
  Oshkosh, Ellsworth, Hyannis, Lisco, Whitman, Ashby, Antioch,
  Crescent Lake National Wildlife Refuge, Duluth, Dogtown Flats,
  Dipping Vat Meadow, Swede Lake, Deer Lake, Britton Lake, Richardson
  Lake, Miles Lake, Mumper, Wickson Lake, Diamond Lake and Bourquim
  Hill.

This includes the following highways...
 Highway 250 between mile markers 1 and 33.
 Highway 2 between mile markers 96 and 162.
 Highway 61 between mile markers 136 and 172.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is an EXTREMELY DANGEROUS SITUATION with tornado like wind 
speeds expected. An 86 mph wind gust occurred at the Alliance 
airport at 10 PM MDT. Mobile homes and high profile vehicles are 
especially susceptible to winds of this magnitude and may be 
overturned. For your protection move to an interior room on the 
lowest floor of a building. These storms have the potential to cause 
serious injury and significant property damage.

&&

LAT...LON 4258 10260 4206 10144 4152 10188 4125 10250
      4142 10264 4174 10264 4177 10268 4200 10268
      4209 10270 4210 10274 4234 10275
TIME...MOT...LOC 0403Z 311DEG 51KT 4241 10241 4213 10269 4191 10298 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...80MPH
 
$$

Buttler

2 follow-up statements

291 
WWUS53 KLBF 100424
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1024 PM MDT Fri Jul 9 2021

NEC005-031-069-075-161-100500-
/O.CON.KLBF.SV.W.0094.000000T0000Z-210710T0500Z/
Arthur NE-Cherry NE-Grant NE-Garden NE-Sheridan NE-
1024 PM MDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM MDT
FOR NORTHWESTERN ARTHUR...SOUTHWESTERN CHERRY...GRANT...GARDEN AND
SOUTHERN SHERIDAN COUNTIES...

At 1023 PM MDT, severe thunderstorms were located along a line
extending from 11 miles northeast of Antioch to 12 miles southwest of
Ellsworth to 14 miles west of Crescent Lake National Wildlife Refuge,
moving east at 55 mph.

These are very dangerous storms.

HAZARD...80 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Oshkosh, Ellsworth, Hyannis, Lisco, Whitman, Ashby, Antioch, Crescent
Lake National Wildlife Refuge, Duluth, Dogtown Flats, Dipping Vat
Meadow, Swede Lake, Deer Lake, Britton Lake, Richardson Lake, Miles
Lake, Mumper, Wickson Lake, Diamond Lake and Bourquim Hill.

This includes the following highways...
 Highway 250 between mile markers 1 and 33.
 Highway 2 between mile markers 96 and 162.
 Highway 61 between mile markers 136 and 172.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is an EXTREMELY DANGEROUS SITUATION. At 1007 MDT, a 86 mph wind 
gust occurred at the Alliance Airport. 

&&

LAT...LON 4258 10260 4206 10144 4152 10188 4125 10250
      4142 10264 4174 10264 4177 10268 4200 10268
      4209 10270 4210 10274 4234 10275
TIME...MOT...LOC 0423Z 284DEG 48KT 4222 10252 4192 10244 4172 10270 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...80MPH
 
$$

Buttler

878 
WWUS53 KLBF 100437
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1037 PM MDT Fri Jul 9 2021

NEC005-031-069-075-161-100500-
/O.CON.KLBF.SV.W.0094.000000T0000Z-210710T0500Z/
Arthur NE-Cherry NE-Grant NE-Garden NE-Sheridan NE-
1037 PM MDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM MDT
FOR NORTHWESTERN ARTHUR...SOUTHWESTERN CHERRY...GRANT...GARDEN AND
SOUTHERN SHERIDAN COUNTIES...

At 1036 PM MDT, severe thunderstorms were located along a line
extending from 9 miles northwest of Ellsworth to 17 miles southwest
of Ashby to near Crescent Lake National Wildlife Refuge to 8 miles
northeast of Lisco, moving east at 55 mph.

These are very dangerous storms.

HAZARD...80 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Oshkosh, Ellsworth, Hyannis, Lisco, Whitman, Ashby, Antioch, Crescent
Lake National Wildlife Refuge, Duluth, Dogtown Flats, Dipping Vat
Meadow, Swede Lake, Deer Lake, Britton Lake, Richardson Lake, Miles
Lake, Mumper, Wickson Lake, Diamond Lake and Bourquim Hill.

This includes the following highways...
 Highway 250 between mile markers 1 and 33.
 Highway 2 between mile markers 96 and 162.
 Highway 61 between mile markers 136 and 172.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is an EXTREMELY DANGEROUS SITUATION. These storms are producing 
winds in excess of 70 MPH. At 1030 PM MDT, an estimated wind gust of 
70 MPH was reported at Ellsworth. 

&&

LAT...LON 4258 10260 4206 10144 4152 10188 4125 10250
      4142 10264 4174 10264 4177 10268 4200 10268
      4209 10270 4210 10274 4234 10275
TIME...MOT...LOC 0436Z 285DEG 46KT 4217 10239 4190 10222 4171 10232
4160 10253

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...80MPH
 
$$

Buttler

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 6:01 PM MDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	44 min
Jul 9, 6:45 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant	45 min
Jul 9, 6:49 PM MDT	Special Weather Statement	LBF	Blaine	26 min
Jul 9, 7:06 PM MDT	Special Weather Statement	LBF	McPherson	24 min
Jul 9, 7:11 PM MDT	Special Weather Statement	LBF	Loup	34 min
Jul 9, 7:30 PM MDT	Special Weather Statement	LBF	Loup	45 min
Jul 9, 7:31 PM MDT	Special Weather Statement	LBF	McPherson	29 min
Jul 9, 7:45 PM MDT	Special Weather Statement	LBF	Custer	30 min
Jul 9, 7:58 PM MDT	Severe Thunderstorm Warning	LBF	Custer	47 min
Jul 9, 7:59 PM MDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	46 min
Jul 9, 8:02 PM MDT	Severe Thunderstorm Warning	LBF	Custer	43 min
Jul 9, 8:04 PM MDT	Special Weather Statement	LBF	Holt	41 min
Jul 9, 8:08 PM MDT	Special Weather Statement	LBF	Wheeler	52 min
Jul 9, 8:23 PM MDT	Severe Thunderstorm Warning	LBF	Holt	52 min
Jul 9, 8:27 PM MDT	Severe Thunderstorm Warning	LBF	Custer	33 min
Jul 9, 8:39 PM MDT	Special Weather Statement	LBF	Holt	36 min
Jul 9, 8:42 PM MDT	Severe Thunderstorm Warning	LBF	Custer	48 min
Jul 9, 8:50 PM MDT	Severe Thunderstorm Warning	LBF	Holt	40 min
Jul 9, 9:31 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	59 min
Jul 9, 10:21 PM MDT	Special Weather Statement	LBF	Sheridan	39 min
Jul 9, 10:53 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Garden, Grant, Hooker, Keith and 3 more	67 min
Jul 9, 10:57 PM MDT	Tornado Warning	LBF	Arthur, Grant, Hooker, McPherson	33 min
Jul 9, 11:45 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Hooker, Lincoln, Logan, McPherson and 1 more	60 min
Jul 10, 12:20 AM MDT	Special Weather Statement	LBF	Lincoln	40 min
Jul 10, 12:42 AM MDT	Special Weather Statement	LBF	Custer	48 min
Jul 10, 1:18 AM MDT	Special Weather Statement	LBF	Lincoln	42 min
Jul 10, 1:22 AM MDT	Severe Thunderstorm Warning	LBF	Lincoln	53 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.