Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, 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, 9:07 PM CDT for Brown County, Keya Paha County, Rock County, Nebraska. It was in force for 53 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
Jun 23, 2021, 9:07 PM CDT (02:07 UTC)
Expired
Jun 23, 2021, 10:00 PM CDT
In force
53 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The North Platte radar (KLNX), 122 km from the middle of the area, began a volume at 02:08 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

TimeReportWhereRemark
Jun 23, 9:15 PM CDTHAIL 13 Se Springview, NE
Jun 23, 10:00 PM CDTHAIL 1.59 Nne Newport, 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.

IssuedProductOfficeLasted
Jun 23, 4:40 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.1 hours before the alert went out and 198 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3468 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

355 
WUUS53 KLBF 240207
SVRLBF
NEC017-103-149-240300-
/O.NEW.KLBF.SV.W.0066.210624T0207Z-210624T0300Z/

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

The National Weather Service in North Platte has issued a

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

* Until 1000 PM CDT.

* At 907 PM CDT, a severe thunderstorm was located near Springview,
  moving southeast at 30 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, Newport, Keller Park State Recreation Area, Thomas Creek
  State Wildlife Management Area, Mariaville, Bobcat State Wildlife
  Management Area, Pine Glen State Wildlife Refuge and Meadville.

This includes the following highways...
 Highway 183 between mile markers 177 and 182, and between mile
markers 199 and 212.
 Highway 20 between mile markers 254 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 4278 9924 4272 9924 4242 9939 4271 9995
      4281 9985
TIME...MOT...LOC 0207Z 296DEG 26KT 4275 9981 

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

Gomez
2 follow-up statements
779 
WWUS53 KLBF 240235
SVSLBF

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

NEC017-103-149-240300-
/O.CON.KLBF.SV.W.0066.000000T0000Z-210624T0300Z/
Rock NE-Brown NE-Keya Paha NE-
935 PM CDT Wed Jun 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHERN ROCK...NORTHEASTERN BROWN AND SOUTHEASTERN KEYA PAHA
COUNTIES...

At 934 PM CDT, a severe thunderstorm was located near Bassett, moving
southeast at 30 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...
Bassett, Newport, Keller Park State Recreation Area, Thomas Creek
State Wildlife Management Area, Mariaville, Bobcat State Wildlife
Management Area, Pine Glen State Wildlife Refuge and Meadville.

This includes the following highways...
 Highway 183 between mile markers 177 and 182, and between mile
markers 199 and 212.
 Highway 20 between mile markers 254 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 4278 9924 4272 9924 4242 9939 4271 9995
      4281 9985
TIME...MOT...LOC 0234Z 296DEG 26KT 4266 9956 

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

Gomez
804 
WWUS53 KLBF 240252
SVSLBF

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

NEC017-103-149-240301-
/O.EXP.KLBF.SV.W.0066.000000T0000Z-210624T0300Z/
Rock NE-Brown NE-Keya Paha NE-
952 PM CDT Wed Jun 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ROCK...NORTHEASTERN
BROWN AND SOUTHEASTERN KEYA PAHA COUNTIES WILL EXPIRE AT 1000 PM
CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

Remember, a Severe Thunderstorm Warning still remains in effect for
Brown, Keya Paha and Rock counties. 

LAT...LON 4278 9924 4272 9924 4242 9939 4271 9995
      4281 9985
TIME...MOT...LOC 0251Z 296DEG 26KT 4261 9943 

$$

Gomez

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 7:25 PM CDTSpecial Weather StatementLBFKeya Paha50 min
Jun 23, 8:04 PM CDTSevere Thunderstorm WarningLBFKeya Paha41 min
Jun 23, 8:12 PM CDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha18 min
Jun 23, 8:39 PM CDTSpecial Weather StatementLBFGrant36 min
Jun 23, 8:44 PM CDTSevere Thunderstorm WarningLBFKeya Paha46 min
Jun 23, 9:28 PM CDTSevere Thunderstorm WarningLBFKeya Paha32 min
Jun 23, 9:47 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt, Keya Paha, Rock43 min
Jun 23, 9:50 PM CDTSevere Thunderstorm WarningLBFBrown, Keya Paha40 min
Jun 23, 10:25 PM CDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha, Rock35 min
Jun 23, 10:27 PM CDTSevere Thunderstorm WarningLBFHolt, Wheeler33 min
Jun 23, 10:33 PM CDTSpecial Weather StatementLBFBrown27 min
Jun 23, 10:53 PM CDTSevere Thunderstorm WarningLBFHolt, Wheeler52 min
Jun 23, 10:57 PM CDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha, Loup, Rock48 min
Jun 23, 11:05 PM CDTSpecial Weather StatementLBFBlaine, Logan, Loup40 min
Jun 23, 11:20 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Custer, Loup25 min
Jun 23, 11:36 PM CDTAreal Flood AdvisoryLBFGarfield, Holt, Loup, Rock, Wheeler3 hr
Jun 23, 11:40 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Garfield, Holt, Loup, Rock and 1 more50 min
Jun 24, 12:30 AM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Garfield, Holt, Loup, Wheeler30 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021Every 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.