388 
WUUS55 KCYS 120017
SVRCYS
NEC045-165-120045-
/O.NEW.KCYS.SV.W.0306.250912T0017Z-250912T0045Z/

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

The National Weather Service in Cheyenne has issued a

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

* Until 645 PM MDT.

* At 616 PM MDT, a severe thunderstorm was located 7 miles southeast
  of Montrose, or 30 miles west of Chadron, moving northeast 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...
  Toadstool Geological Park and Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4277 10358 4286 10375 4300 10365 4300 10323
TIME...MOT...LOC 0016Z 219DEG 25KT 4287 10361 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Mose

863 
WWUS55 KCYS 120039
SVSCYS

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

NEC045-165-120048-
/O.EXP.KCYS.SV.W.0306.000000T0000Z-250912T0045Z/
Dawes NE-Sioux NE-
639 PM MDT Thu Sep 11 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DAWES AND
NORTHEASTERN SIOUX COUNTIES WILL EXPIRE AT 645 PM MDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

&&

LAT...LON 4277 10358 4286 10375 4300 10365 4300 10323
TIME...MOT...LOC 0038Z 219DEG 25KT 4298 10349 

$$

Mose