Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 47, NWS Cheyenne, WY

June 10, 2021Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 10, 2021, 10:23 PM MDT for Dawes County, Sioux County, Nebraska. It was in force for 67 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 10, 2021, 10:23 PM MDT (04:23 UTC)
Expired: Jun 10, 2021, 11:30 PM MDT
In force: 67 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dawes County, NE, Sioux County, NE

The radar

The Rapid City radar (KUDX), 160 km from the middle of the area, began a volume at 04:25 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 10, 10:29 PM MDT	TSTM WND GST 60	Chadron Airport, 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 10, 8:08 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 4.4 hours before the alert went out and 153 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: 1559 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 2700 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 15.0

Open this sounding in Storm Lab

The text

As transmitted.

494 
WUUS55 KCYS 110423
SVRCYS
NEC045-165-110530-
/O.NEW.KCYS.SV.W.0047.210611T0423Z-210611T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
1023 PM MDT Thu Jun 10 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Dawes County in the Panhandle of Nebraska...
  East central Sioux County in the Panhandle of Nebraska...

* Until 1130 PM MDT.

* At 1023 PM MDT, a severe thunderstorm was located near Crawford, or
  26 miles southwest of Chadron, moving northeast at 60 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 be near...
  Whitney Lake around 1035 PM MDT.
  Chadron Airport around 1045 PM MDT.
  Chadron around 1050 PM MDT.

Other locations impacted by this severe thunderstorm include Fort
Robinson, Whitney and Chadron St Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4244 10346 4256 10361 4300 10327 4300 10279
      4279 10279 4278 10277 4262 10278
TIME...MOT...LOC 0423Z 221DEG 52KT 4260 10343 

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

Rubin

4 follow-up statements

837 
WWUS55 KCYS 110441
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1041 PM MDT Thu Jun 10 2021

NEC165-110451-
/O.CAN.KCYS.SV.W.0047.000000T0000Z-210611T0530Z/
Sioux NE-
1041 PM MDT Thu Jun 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SIOUX 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 200 AM MDT for 
much of the Panhandle of Nebraska.

LAT...LON 4248 10332 4278 10338 4300 10327 4300 10279
      4279 10279 4278 10277 4262 10278
TIME...MOT...LOC 0441Z 224DEG 46KT 4276 10321 

$$

NEC045-110530-
/O.CON.KCYS.SV.W.0047.000000T0000Z-210611T0530Z/
Dawes NE-
1041 PM MDT Thu Jun 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM MDT
FOR DAWES COUNTY...

At 1041 PM MDT, a severe thunderstorm was located near Whitney Lake,
or 11 miles west of Chadron, moving northeast at 50 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 storm will be near...
  Chadron Airport around 1050 PM MDT.
  Chadron around 1055 PM MDT.

Other locations impacted by this severe thunderstorm include Whitney
and Chadron St Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4248 10332 4278 10338 4300 10327 4300 10279
      4279 10279 4278 10277 4262 10278
TIME...MOT...LOC 0441Z 224DEG 46KT 4276 10321 

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

Rubin

338 
WWUS55 KCYS 110455
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1055 PM MDT Thu Jun 10 2021

NEC045-110530-
/O.CON.KCYS.SV.W.0047.000000T0000Z-210611T0530Z/
Dawes NE-
1055 PM MDT Thu Jun 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM MDT
FOR EASTERN DAWES COUNTY...

At 1054 PM MDT, severe thunderstorms were located along a line
extending from near Chadron to near Box Butte Dam, moving east at 50
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.

These severe thunderstorms will remain over mainly rural areas of
eastern Dawes County, including the following locations... Chadron St
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4252 10318 4278 10315 4300 10309 4300 10279
      4279 10279 4278 10277 4262 10278
TIME...MOT...LOC 0454Z 249DEG 43KT 4291 10297 4249 10303 

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

Rubin

537 
WWUS55 KCYS 110509
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1109 PM MDT Thu Jun 10 2021

NEC045-110530-
/O.CON.KCYS.SV.W.0047.000000T0000Z-210611T0530Z/
Dawes NE-
1109 PM MDT Thu Jun 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM MDT
FOR NORTHEASTERN DAWES COUNTY...

At 1109 PM MDT, a severe thunderstorm was located 8 miles southeast
of Red Cloud Campground, or 8 miles west of Hay Springs, moving
northeast at 35 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, including the following locations...
Chadron St Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4257 10299 4278 10304 4300 10296 4300 10279
      4279 10279 4278 10277 4262 10278
TIME...MOT...LOC 0509Z 226DEG 31KT 4265 10286 

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

Rubin

220 
WWUS55 KCYS 110525
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1125 PM MDT Thu Jun 10 2021

NEC045-110534-
/O.EXP.KCYS.SV.W.0047.000000T0000Z-210611T0530Z/
Dawes NE-
1125 PM MDT Thu Jun 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DAWES COUNTY WILL
EXPIRE AT 1130 PM 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.  However small hail, gusty winds and heavy rain
are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 200 AM MDT for 
most of the Panhandle of Nebraska.

LAT...LON 4257 10299 4278 10304 4300 10296 4300 10279
      4279 10279 4278 10277 4262 10278
TIME...MOT...LOC 0524Z 221DEG 52KT 4281 10267 

$$

Rubin

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 9:24 PM MDT	Special Weather Statement	CYS	Sioux	51 min
Jun 10, 9:26 PM MDT	Special Weather Statement	CYS	Sioux	49 min
Jun 10, 9:38 PM MDT	Severe Thunderstorm Warning	CYS	Dawes, Sioux	32 min
Jun 10, 10:03 PM MDT	Special Weather Statement	CYS	Sioux	42 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.