Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, NWS North Platte, NE

June 23, 2021Brown County, Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 23, 2021, 5:59 PM CDT for Brown County, Cherry County, Nebraska. It was in force for 46 min. 1 report 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: Jun 23, 2021, 5:59 PM CDT (22:59 UTC)
Expired: Jun 23, 2021, 6:45 PM CDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Brown County, NE, Cherry County, NE

The radar

The North Platte radar (KLNX), 83 km from the middle of the area, began a volume at 23:01 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
Jun 23, 6:41 PM CDT	HAIL 1	Johnstown, NE

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
Jun 23, 4:40 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.0 hours before the alert went out and 172 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: 211 J/kg
Mixed-layer CIN: -469 J/kg
Mixed-layer LCL: 2679 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

187 
WUUS53 KLBF 232259
SVRLBF
NEC017-031-232345-
/O.NEW.KLBF.SV.W.0060.210623T2259Z-210623T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
559 PM CDT Wed Jun 23 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  East central Cherry County in north central Nebraska...
  Northwestern Brown County in north central Nebraska...

* Until 645 PM CDT.

* At 559 PM CDT, a severe thunderstorm was located 13 miles southwest
  of Norden, or 19 miles southeast 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...
  Johnstown, Wood Lake and Antelope Peak. 

This includes Highway 20 between mile markers 214 and 237.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4266 10039 4282 10026 4269 9984 4242 10008
TIME...MOT...LOC 2259Z 301DEG 13KT 4271 10024 

HAIL...1.75IN
WIND...60MPH
 
$$

Taylor

1 follow-up statement

479 
WWUS53 KLBF 232325
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
625 PM CDT Wed Jun 23 2021

NEC031-232333-
/O.CAN.KLBF.SV.W.0060.000000T0000Z-210623T2345Z/
Cherry NE-
625 PM CDT Wed Jun 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHERRY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
north central Nebraska.

LAT...LON 4269 9984 4242 10008 4253 10019 4277 10018
TIME...MOT...LOC 2323Z 317DEG 13KT 4264 10017 

$$

NEC017-232345-
/O.CON.KLBF.SV.W.0060.000000T0000Z-210623T2345Z/
Brown NE-
625 PM CDT Wed Jun 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHWESTERN BROWN COUNTY...

At 623 PM CDT, a severe thunderstorm was located 7 miles northwest of
Johnstown, or 17 miles west of Ainsworth, moving southeast at 15 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...
Johnstown and Antelope Peak. 

This includes Highway 20 between mile markers 225 and 237.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4269 9984 4242 10008 4253 10019 4277 10018
TIME...MOT...LOC 2323Z 317DEG 13KT 4264 10017 

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

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 4:51 PM CDT	Special Weather Statement	LBF	Keya Paha	39 min
Jun 23, 5:19 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	41 min
Jun 23, 5:22 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	38 min
Jun 23, 5:58 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	47 min
Jun 23, 6:05 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha	23 min
Jun 23, 6:45 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	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.