Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 166, NWS North Platte, NE

August 30, 2021Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 30, 2021, 9:29 PM MDT for Cherry County, Nebraska. It was in force for 46 min. 2 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: Aug 30, 2021, 9:29 PM MDT (03:29 UTC)
Expired: Aug 30, 2021, 10:15 PM MDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.75 in
Wind: 60.0 mph

County Cherry County, NE

The radar

The North Platte radar (KLNX), 107 km from the middle of the area, began a volume at 03:33 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
Aug 30, 10:00 PM MDT	HAIL 1	2 Sw Valentine, NE	DELAYED REPORT
Aug 30, 10:25 PM MDT	HAIL 1	9 S Valentine, NE	DELAYED REPORT

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
Aug 30, 8:57 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), 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: 1819 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 2084 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 300 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 18.9

Open this sounding in Storm Lab

The text

As transmitted.

925 
WUUS53 KLBF 310329
SVRLBF
NEC031-310415-
/O.NEW.KLBF.SV.W.0166.210831T0329Z-210831T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
1029 PM CDT Mon Aug 30 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northeastern Cherry County in north central Nebraska...

* Until 1115 PM CDT.

* At 1028 PM CDT, a severe thunderstorm was located 7 miles west of
  Valentine, moving southeast at 15 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Valentine, Crookston, Highway 97 crossing the Niobrara River and
  Schlagel Creek State Wildlife Management Area.

This includes the following highways...
 Highway 20 between mile markers 182 and 205.
 Highway 97 between mile markers 131 and 141.
 Highway 83 between mile markers 197 and 222.
 Highway 12 between mile markers 1 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in North Platte.

&&

LAT...LON 4298 10033 4265 10054 4289 10087 4300 10078
      4300 10050
TIME...MOT...LOC 0328Z 305DEG 15KT 4291 10069 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

NMJ

1 follow-up statement

272 
WWUS53 KLBF 310350
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1050 PM CDT Mon Aug 30 2021

NEC031-310415-
/O.CON.KLBF.SV.W.0166.000000T0000Z-210831T0415Z/
Cherry NE-
1050 PM CDT Mon Aug 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR NORTHEASTERN CHERRY COUNTY...

At 1050 PM CDT, a severe thunderstorm was located near Valentine,
moving southeast at 15 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Valentine, Crookston, Highway 97 crossing the Niobrara River and
Schlagel Creek State Wildlife Management Area.

This includes the following highways...
 Highway 20 between mile markers 185 and 205.
 Highway 97 between mile markers 131 and 141.
 Highway 83 between mile markers 197 and 222.
 Highway 12 between mile markers 1 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
North Platte.

&&

LAT...LON 4298 10033 4265 10054 4285 10081 4296 10075
      4300 10058 4300 10050
TIME...MOT...LOC 0350Z 318DEG 11KT 4284 10062 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 6:57 PM MDT	Special Weather Statement	LBF	Frontier	48 min
Aug 30, 8:47 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	43 min
Aug 30, 9:33 PM MDT	Special Weather Statement	LBF	Keya Paha	42 min
Aug 30, 9:55 PM MDT	Areal Flood Advisory	LBF	Cherry	54 min
Aug 30, 10:11 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Cherry	49 min
Aug 30, 10:24 PM MDT	Special Weather Statement	LBF	Holt	51 min
Aug 30, 10:55 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry	50 min
Aug 30, 11:42 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Brown, Cherry	48 min
Aug 31, 12:20 AM MDT	Special Weather Statement	LBF	Brown	40 min
Aug 31, 12:37 AM MDT	Special Weather Statement	LBF	Boyd	53 min
Aug 31, 12:59 AM MDT	Special Weather Statement	LBF	Keya Paha	46 min
Aug 31, 1:32 AM MDT	Special Weather Statement	LBF	Holt	43 min
Aug 31, 1:43 AM MDT	Special Weather Statement	LBF	Brown, Keya Paha	47 min
Aug 31, 2:15 AM MDT	Special Weather Statement	LBF	Holt	45 min
Aug 31, 2:28 AM MDT	Special Weather Statement	LBF	Boyd, Holt, Rock	62 min
Aug 31, 2:50 AM MDT	Special Weather Statement	LBF	Garfield	40 min
Aug 31, 3:20 AM MDT	Special Weather Statement	LBF	Garfield, Wheeler	40 min
Aug 31, 3:58 AM MDT	Special Weather Statement	LBF	Wheeler	17 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.