Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS North Platte, NE

July 9, 2021Garden County, Sheridan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 9, 2021, 5:19 PM MDT for Garden County, Sheridan County, Nebraska. It was in force for 41 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, 5:19 PM MDT (23:19 UTC)
Expired: Jul 9, 2021, 6:00 PM MDT
In force: 41 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 2.0 in
Wind: 70.0 mph

Counties Garden County, NE, Sheridan County, NE

The radar

The North Platte radar (KLNX), 171 km from the middle of the area, began a volume at 23:19 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 12:00Z, 11.3 hours before the alert went out and 201 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: 93 J/kg
Mixed-layer CIN: -824 J/kg
Mixed-layer LCL: 1724 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

060 
WUUS53 KLBF 092319
SVRLBF
NEC069-161-100000-
/O.NEW.KLBF.SV.W.0083.210709T2319Z-210710T0000Z/

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

The National Weather Service in North Platte has issued a

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

* Until 600 PM MDT.

* At 518 PM MDT, a severe thunderstorm was located near Alliance,
  moving east at 45 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...
  Ellsworth, Antioch, Snow Lake, Miles Lake, Wickson Lake, Patterson
  Lake, Lakeside, Herman Lake, Krause Lake, Kennedy Lake and Tralnor
  Lake.

This includes the following highways...
 Highway 250 between mile markers 1 and 14.
 Highway 2 between mile markers 96 and 119.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4236 10274 4214 10217 4181 10248 4189 10268
      4200 10268 4201 10270 4209 10270 4210 10274
      4234 10275
TIME...MOT...LOC 2318Z 291DEG 37KT 4216 10280 

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

Roberg

1 follow-up statement

850 
WWUS53 KLBF 092347
SVSLBF

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

NEC069-161-100000-
/O.CON.KLBF.SV.W.0083.000000T0000Z-210710T0000Z/
Garden NE-Sheridan NE-
547 PM MDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MDT
FOR NORTHWESTERN GARDEN AND SOUTHWESTERN SHERIDAN COUNTIES...

At 547 PM MDT, a severe thunderstorm was located over Antioch, or 11
miles east of Alliance, moving southeast at 45 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...
Ellsworth, Antioch, Snow Lake, Miles Lake, Wickson Lake, Patterson
Lake, Lakeside, Herman Lake, Krause Lake, Kennedy Lake and Tralnor
Lake.

This includes the following highways...
 Highway 250 between mile markers 1 and 14.
 Highway 2 between mile markers 96 and 119.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4236 10274 4214 10217 4181 10248 4189 10268
      4200 10268 4201 10270 4209 10270 4210 10274
      4234 10275
TIME...MOT...LOC 2347Z 305DEG 40KT 4210 10265 

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

Roberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 6:13 PM MDT	Special Weather Statement	LBF	Chase	32 min
Jul 8, 8:16 PM MDT	Special Weather Statement	LBF	Cherry	29 min
Jul 8, 8:34 PM MDT	Special Weather Statement	LBF	Cherry	26 min
Jul 8, 8:39 PM MDT	Special Weather Statement	LBF	Cherry	21 min
Jul 8, 8:58 PM MDT	Special Weather Statement	LBF	Cherry	32 min
Jul 8, 9:25 PM MDT	Special Weather Statement	LBF	Cherry	35 min
Jul 8, 9:33 PM MDT	Special Weather Statement	LBF	Blaine	27 min
Jul 9, 12:19 AM MDT	Special Weather Statement	LBF	Cherry	41 min
Jul 9, 1:32 AM MDT	Special Weather Statement	LBF	Cherry	43 min
Jul 9, 1:56 AM MDT	Special Weather Statement	LBF	Cherry	49 min
Jul 9, 2:43 AM MDT	Special Weather Statement	LBF	Thomas	47 min
Jul 9, 5:44 PM MDT	Special Weather Statement	LBF	Garden	31 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.