Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 59, NWS Cheyenne, WY

June 15, 2021Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 15, 2021, 4:59 AM MDT for Dawes County, Nebraska. It was in force for 31 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 15, 2021, 4:59 AM MDT (10:59 UTC)
Expired: Jun 15, 2021, 5:30 AM MDT
In force: 31 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Dawes County, NE

The radar

The Rapid City radar (KUDX), 131 km from the middle of the area, began a volume at 10:59 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 nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 11.0 hours before the alert went out and 125 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: 1558 J/kg
Mixed-layer CIN: -171 J/kg
Mixed-layer LCL: 2097 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted.

217 
WUUS55 KCYS 151059
SVRCYS
NEC045-151130-
/O.NEW.KCYS.SV.W.0059.210615T1059Z-210615T1130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
459 AM MDT Tue Jun 15 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Northeastern Dawes County in the Panhandle of Nebraska...

* Until 530 AM MDT.

* At 459 AM MDT, a severe thunderstorm was located near Slim Butte,
  or 16 miles north of Chadron, moving southeast at 20 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.

* This severe thunderstorm will remain over mainly rural areas of
  northeastern Dawes County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4291 10280 4300 10299 4300 10279 4291 10279
TIME...MOT...LOC 1059Z 304DEG 18KT 4306 10290 

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

Mokry

2 follow-up statements

951 
WWUS55 KCYS 151113
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
513 AM MDT Tue Jun 15 2021

NEC045-151130-
/O.CON.KCYS.SV.W.0059.000000T0000Z-210615T1130Z/
Dawes NE-
513 AM MDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 AM MDT
FOR NORTHEASTERN DAWES COUNTY...

At 513 AM MDT, a severe thunderstorm was located over Slim Butte, or
13 miles west of Pine Ridge, moving southeast at 20 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of
northeastern Dawes County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4291 10280 4295 10287 4300 10291 4300 10279
      4291 10279
TIME...MOT...LOC 1113Z 304DEG 18KT 4302 10282 

HAIL...1.00IN
WIND...<50MPH
 
$$

Mokry

053 
WWUS55 KCYS 151121
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
521 AM MDT Tue Jun 15 2021

NEC045-151131-
/O.EXP.KCYS.SV.W.0059.000000T0000Z-210615T1130Z/
Dawes NE-
521 AM MDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DAWES COUNTY WILL
EXPIRE AT 530 AM MDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4291 10280 4295 10287 4300 10291 4300 10279
      4291 10279
TIME...MOT...LOC 1121Z 304DEG 18KT 4300 10279 

$$

Mokry

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.