Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 59, NWS North Platte, NE

June 23, 2021Brown County, Keya Paha County, Rock County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 23, 2021, 5:58 PM CDT for Brown County, Keya Paha County, Rock County, Nebraska. It was in force for 47 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: Jun 23, 2021, 5:58 PM CDT (22:58 UTC)
Expired: Jun 23, 2021, 6:45 PM CDT
In force: 47 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Brown County, NE, Keya Paha County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 107 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.

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 186 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.

126 
WUUS53 KLBF 232258
SVRLBF
NEC017-103-149-232345-
/O.NEW.KLBF.SV.W.0059.210623T2258Z-210623T2345Z/

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

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Rock County in north central Nebraska...
  Northeastern Brown County in north central Nebraska...
  South central Keya Paha County in north central Nebraska...

* Until 645 PM CDT.

* At 557 PM CDT, a severe thunderstorm was located 8 miles south of
  Springview, moving southeast at 15 mph.

  HAZARD...Ping pong 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...
  Bassett, Long Pine, Keller Park State Recreation Area, Thomas Creek
  State Wildlife Management Area and Pine Glen State Wildlife Refuge.

This includes the following highways...
 Highway 183 between mile markers 173 and 182, and between mile
markers 196 and 212.
 Highway 20 between mile markers 250 and 264.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4266 9990 4281 9978 4273 9932 4244 9954
TIME...MOT...LOC 2257Z 301DEG 14KT 4270 9976 

HAIL...1.50IN
WIND...60MPH
 
$$

Taylor

1 follow-up statement

698 
WWUS53 KLBF 232321
SVSLBF

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

NEC017-103-149-232345-
/O.CON.KLBF.SV.W.0059.000000T0000Z-210623T2345Z/
Rock NE-Brown NE-Keya Paha NE-
621 PM CDT Wed Jun 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHWESTERN ROCK...NORTHEASTERN BROWN AND SOUTH CENTRAL KEYA
PAHA COUNTIES...

At 621 PM CDT, a severe thunderstorm was located 7 miles south of
Springview, moving east at 10 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...
Bassett, Long Pine, Keller Park State Recreation Area, Thomas Creek
State Wildlife Management Area and Pine Glen State Wildlife Refuge.

This includes the following highways...
 Highway 183 between mile markers 173 and 182, and between mile
markers 196 and 212.
 Highway 20 between mile markers 250 and 264.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4266 9990 4281 9978 4273 9932 4244 9954
TIME...MOT...LOC 2321Z 281DEG 7KT 4272 9972 

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, 5:59 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry	46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.