Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 70, NWS North Platte, NE

June 23, 20214 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 23, 2021, 10:25 PM CDT for 4 counties in Nebraska. It was in force for 35 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, 10:25 PM CDT (03:25 UTC)
Expired: Jun 23, 2021, 11:00 PM CDT
In force: 35 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

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

The radar

The North Platte radar (KLNX), 83 km from the middle of the area, began a volume at 03:29 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, 10:32 PM CDT	HAIL 1.75	5 Wnw Ainsworth, 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 00:00Z, 3.4 hours before the alert went out and 166 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: 3468 J/kg
Mixed-layer CIN: -185 J/kg
Mixed-layer LCL: 1979 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

164 
WUUS53 KLBF 240325
SVRLBF
NEC017-031-103-149-240400-
/O.NEW.KLBF.SV.W.0070.210624T0325Z-210624T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
1025 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...
  Northern Rock County in north central Nebraska...
  Brown County in north central Nebraska...
  Southwestern Keya Paha County in north central Nebraska...

* Until 1100 PM CDT.

* At 1025 PM CDT, a severe thunderstorm was located over Ainsworth,
  moving southeast at 40 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Ainsworth, Bassett, Long Pine, Newport, Johnstown, Wood Lake,
  Hofeld Lake, Raven, Bobcat State Wildlife Management Area,
  Meadville, North River Trail, Keller Park State Recreation Area,
  Pine Glen State Wildlife Refuge, Antelope Peak, Jones Lake and
  Johnsons Corner.

This includes the following highways...
 Highway 183 between mile markers 169 and 207.
 Highway 20 between mile markers 219 and 271.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4260 10036 4284 10002 4259 9929 4213 9984
TIME...MOT...LOC 0325Z 298DEG 43KT 4259 9987 

HAIL...1.25IN
WIND...60MPH
 
$$

Gomez

1 follow-up statement

468 
WWUS53 KLBF 240347
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1047 PM CDT Wed Jun 23 2021

NEC017-031-103-149-240400-
/O.CON.KLBF.SV.W.0070.000000T0000Z-210624T0400Z/
Cherry NE-Rock NE-Brown NE-Keya Paha NE-
1047 PM CDT Wed Jun 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR EAST CENTRAL CHERRY...NORTHERN ROCK...BROWN AND SOUTHWESTERN KEYA
PAHA COUNTIES...

At 1046 PM CDT, a severe thunderstorm was located 7 miles south of
Bassett, moving southeast at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Ainsworth, Bassett, Long Pine, Newport, Johnstown, Wood Lake, Hofeld
Lake, Raven, Bobcat State Wildlife Management Area, Meadville, North
River Trail, Keller Park State Recreation Area, Pine Glen State
Wildlife Refuge, Antelope Peak, Jones Lake and Johnsons Corner.

This includes the following highways...
 Highway 183 between mile markers 169 and 207.
 Highway 20 between mile markers 219 and 271.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4260 10036 4284 10002 4259 9929 4213 9984
TIME...MOT...LOC 0346Z 298DEG 43KT 4247 9957 

HAIL...1.25IN
WIND...60MPH
 
$$

Gomez

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 7:25 PM CDT	Special Weather Statement	LBF	Keya Paha	50 min
Jun 23, 8:04 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	41 min
Jun 23, 8:12 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	18 min
Jun 23, 8:39 PM CDT	Special Weather Statement	LBF	Grant	36 min
Jun 23, 8:44 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	46 min
Jun 23, 9:07 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	53 min
Jun 23, 9:28 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	32 min
Jun 23, 9:47 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha, Rock	43 min
Jun 23, 9:50 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha	40 min
Jun 23, 10:27 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	33 min
Jun 23, 10:33 PM CDT	Special Weather Statement	LBF	Brown	27 min
Jun 23, 10:53 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	52 min
Jun 23, 10:57 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha, Loup, Rock	48 min
Jun 23, 11:05 PM CDT	Special Weather Statement	LBF	Blaine, Logan, Loup	40 min
Jun 23, 11:20 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Custer, Loup	25 min
Jun 23, 11:36 PM CDT	Areal Flood Advisory	LBF	Garfield, Holt, Loup, Rock, Wheeler	3 hr
Jun 23, 11:40 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Garfield, Holt, Loup, Rock and 1 more	50 min
Jun 24, 12:30 AM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Garfield, Holt, Loup, Wheeler	30 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.