Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 85, NWS North Platte, NE

July 9, 2021Arthur County, Garden County, Grant County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 9, 2021, 6:45 PM MDT for Arthur County, Garden County, Grant 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: Jul 9, 2021, 6:45 PM MDT (00:45 UTC)
Expired: Jul 9, 2021, 7:30 PM MDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Hail: 2.0 in
Wind: 70.0 mph

Counties Arthur County, NE, Garden County, NE, Grant County, NE

The radar

The North Platte radar (KLNX), 144 km from the middle of the area, began a volume at 00:44 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.

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.8 hours before the alert went out and 159 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.

905 
WUUS53 KLBF 100045
SVRLBF
NEC005-069-075-100130-
/O.NEW.KLBF.SV.W.0085.210710T0045Z-210710T0130Z/

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

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northern Arthur County in west central Nebraska...
  Southern Grant County in west central Nebraska...
  Northern Garden County in the Panhandle of Nebraska...

* Until 730 PM MDT.

* At 643 PM MDT, severe thunderstorms were located along a line
  extending from 6 miles southwest of Hyannis to 9 miles southeast of
  Ellsworth to 11 miles northwest of Crescent Lake National Wildlife
  Refuge, moving southeast at 25 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...
  Crescent Lake, Rackett, Dogtown Flats, Sand Puddin Lake, Swede 
  Lake, Deer Lake, Britton Lake, Cogill Lake, Kincaid Lake, Wild 
  Horse Flats, Richardson Lake, Mumper, Green Lake, Bourquim Hill, 
  Dominick Lake, Jerry Lake, Adams Flats, Pratt Lake, Spring Valley 
  Lake and Sugar Loaf Hill.

This includes Highway 61 between mile markers 134 and 153.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows!
 
&&

LAT...LON 4199 10229 4195 10166 4172 10144 4168 10181
      4148 10253 4165 10264 4174 10264 4175 10267
      4177 10268 4187 10268
TIME...MOT...LOC 0043Z 310DEG 22KT 4193 10185 4193 10221 4182 10260 

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

CDC

3 follow-up statements

182 
WWUS53 KLBF 100102
SVSLBF

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

NEC005-069-075-100130-
/O.CON.KLBF.SV.W.0085.000000T0000Z-210710T0130Z/
Arthur NE-Grant NE-Garden NE-
702 PM MDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT
FOR NORTHERN ARTHUR...SOUTHERN GRANT AND CENTRAL GARDEN COUNTIES...

At 702 PM MDT, severe thunderstorms were located along a line
extending from 10 miles southeast of Hyannis to 11 miles south of
Ashby to near Crescent Lake National Wildlife Refuge, moving
southeast at 25 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...
Crescent Lake, Rackett, Dogtown Flats, Sand Puddin Lake, Swede Lake, 
Deer Lake, Britton Lake, Cogill Lake, Richardson Lake, Mumper, Green 
Lake, Bourquim Hill, Adams Flats, Pratt Lake, Spring Valley Lake and 
Sugar Loaf Hill.

This includes Highway 61 between mile markers 134 and 153.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4196 10187 4195 10166 4172 10144 4168 10181
      4148 10253 4165 10264 4174 10264
TIME...MOT...LOC 0102Z 300DEG 33KT 4188 10165 4186 10197 4176 10235 

HAIL...1.00IN
WIND...60MPH
 
$$

CDC

297 
WWUS53 KLBF 100113
SVSLBF

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

NEC069-100123-
/O.CAN.KLBF.SV.W.0085.000000T0000Z-210710T0130Z/
Garden NE-
713 PM MDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GARDEN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of and west central Nebraska.

LAT...LON 4196 10187 4195 10166 4172 10144 4168 10181
      4163 10199 4174 10198 4174 10206 4190 10207
      4191 10205
TIME...MOT...LOC 0113Z 308DEG 26KT 4179 10183 

$$

NEC005-075-100130-
/O.CON.KLBF.SV.W.0085.000000T0000Z-210710T0130Z/
Arthur NE-Grant NE-
713 PM MDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT
FOR NORTHERN ARTHUR AND SOUTHERN GRANT COUNTIES...

At 713 PM MDT, a severe thunderstorm was located 15 miles south of
Hyannis, or 16 miles northwest of Arthur, moving southeast at 30 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...
Green Lake, Sand Puddin Lake, Swede Lake, Pratt Lake, Spring Valley
Lake, Cogill Lake and Bourquim Hill.

This includes Highway 61 between mile markers 134 and 153.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4196 10187 4195 10166 4172 10144 4168 10181
      4163 10199 4174 10198 4174 10206 4190 10207
      4191 10205
TIME...MOT...LOC 0113Z 308DEG 26KT 4179 10183 

HAIL...1.00IN
WIND...60MPH
 
$$

CDC

320 
WWUS53 KLBF 100125
SVSLBF

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

NEC005-075-100135-
/O.EXP.KLBF.SV.W.0085.000000T0000Z-210710T0130Z/
Arthur NE-Grant NE-
725 PM MDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ARTHUR AND SOUTHERN
GRANT COUNTIES WILL EXPIRE AT 730 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of and west central Nebraska.

LAT...LON 4196 10187 4195 10166 4172 10144 4168 10181
      4163 10199 4174 10198 4174 10206 4190 10207
      4191 10205
TIME...MOT...LOC 0125Z 310DEG 22KT 4175 10177 

$$

CDC

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, 6:49 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, 10:05 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Garden, Grant, Sheridan	55 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.