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Severe Thunderstorm Warning 0305
Issued by the Cheyenne Forecast Office

Action Issued Starts Expiration
New 2025-09-11 18:42:57 2025-09-11 18:42:00 2025-09-11 19:30:00
Continued 2025-09-11 18:58:58 2025-09-11 19:30:00
Continued 2025-09-11 19:15:29 2025-09-11 19:30:00


Action: New
Issued At: 2025-09-11 18:42:57

304 
WUUS55 KCYS 112342
SVRCYS
NEC045-165-120030-
/O.NEW.KCYS.SV.W.0305.250911T2342Z-250912T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
542 PM MDT Thu Sep 11 2025

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Western Dawes County in the Panhandle of Nebraska...
  Central Sioux County in the Panhandle of Nebraska...

* Until 630 PM MDT.

* At 542 PM MDT, a severe thunderstorm was located 10 miles southeast
  of Harrison, or 39 miles east of Lusk, moving northeast 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...
  Crawford, Whitney, Roberts Trailhead Campground, Whitney Lake,
  Soldier Creek Campground, Fort Robinson State Park, Agate Fossil
  Beds National Monument, and Belmont.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4242 10382 4247 10396 4259 10397 4295 10334
      4263 10305
TIME...MOT...LOC 2342Z 241DEG 35KT 4259 10372 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Mose


Action: Continued
Issued At: 2025-09-11 18:58:58

867 
WWUS55 KCYS 112358
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
558 PM MDT Thu Sep 11 2025

NEC045-165-120030-
/O.CON.KCYS.SV.W.0305.000000T0000Z-250912T0030Z/
Dawes NE-Sioux NE-
558 PM MDT Thu Sep 11 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR SOUTHWESTERN DAWES AND CENTRAL SIOUX COUNTIES...

At 558 PM MDT, a severe thunderstorm was located over Fort Robinson
State Park, or 28 miles west of Chadron, moving northeast 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...
Crawford, Whitney Lake, Soldier Creek Campground, Fort Robinson State
Park, and Belmont.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4243 10378 4250 10388 4262 10392 4277 10366
      4292 10339 4261 10311
TIME...MOT...LOC 2358Z 241DEG 35KT 4267 10353 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Mose


Action: Continued
Issued At: 2025-09-11 19:15:29

346 
WWUS55 KCYS 120015
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
615 PM MDT Thu Sep 11 2025

NEC045-165-120030-
/O.CON.KCYS.SV.W.0305.000000T0000Z-250912T0030Z/
Dawes NE-Sioux NE-
615 PM MDT Thu Sep 11 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR SOUTHWESTERN DAWES AND NORTHEASTERN SIOUX COUNTIES...

At 615 PM MDT, a severe thunderstorm was located over Whitney Lake,
or 17 miles west of Chadron, moving northeast at 40 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...
Crawford, Whitney Lake, Soldier Creek Campground, Fort Robinson State
Park, and Belmont.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4245 10371 4250 10379 4265 10382 4277 10366
      4292 10339 4261 10311
TIME...MOT...LOC 0015Z 241DEG 35KT 4275 10333 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Mose



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