Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 93, NWS North Platte, NE

July 9, 2021Sheridan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 9, 2021, 9:31 PM MDT for Sheridan County, Nebraska. It was in force for 59 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, 9:31 PM MDT (03:31 UTC)
Expired: Jul 9, 2021, 10:30 PM MDT
In force: 59 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Hail: 2.0 in
Wind: 70.0 mph

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 176 km from the middle of the area, began a volume at 03:35 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
Jul 9, 8:06 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 3.5 hours before the alert went out and 199 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: 240 J/kg
Mixed-layer CIN: -260 J/kg
Mixed-layer LCL: 2327 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

053 
WUUS53 KLBF 100331
SVRLBF
NEC161-100430-
/O.NEW.KLBF.SV.W.0093.210710T0331Z-210710T0430Z/

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

The National Weather Service in North Platte has issued a

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

* Until 1030 PM MDT.

* At 931 PM MDT, a severe thunderstorm was located 8 miles southeast
  of Red Cloud Campground, or 12 miles southwest of Hay Springs,
  moving southeast at 40 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...
  Antioch, Wickson Lake, Diamond Lake, Krause Lake, Smith Lake State
  Wildlife Management Area, Highway 250 crossing the Niobrara River,
  Intersection of Highway 87 and Antelope Road and Walgren Lake State
  Recreation Area.

This includes the following highways...
 Highway 250 between mile markers 12 and 40.
 Highway 2 between mile markers 96 and 103.

LAT...LON 4268 10277 4250 10212 4200 10263 4201 10267
      4206 10271 4209 10270 4209 10273 4212 10275
      4244 10275 4244 10277
TIME...MOT...LOC 0331Z 306DEG 33KT 4260 10290 

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

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, 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.