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Severe Thunderstorm Warning 0303
Issued by the Cheyenne Forecast Office

Action Issued Starts Expiration
New 2025-09-11 18:19:26 2025-09-11 18:18:00 2025-09-11 18:45:00
Continued 2025-09-11 18:33:57 2025-09-11 18:45:00
Cancelled 2025-09-11 18:33:57 2025-09-11 18:45:00


Action: New
Issued At: 2025-09-11 18:19:26

810 
WUUS55 KCYS 112318
SVRCYS
NEC165-WYC015-112345-
/O.NEW.KCYS.SV.W.0303.250911T2318Z-250911T2345Z/

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

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Central Sioux County in the Panhandle of Nebraska...
  Northeastern Goshen County in southeastern Wyoming...

* Until 545 PM MDT.

* At 518 PM MDT, a severe thunderstorm was located 11 miles northwest
  of Agate Fossil Beds National Monument, or 30 miles southeast of
  Lusk, moving northeast at 35 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...
  Agate Fossil Beds National Monument.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4236 10398 4244 10413 4254 10411 4274 10378
      4250 10349
TIME...MOT...LOC 2318Z 243DEG 32KT 4250 10397 

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 18:33:57

163 
WWUS55 KCYS 112333
SVSCYS

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

WYC015-112343-
/O.CAN.KCYS.SV.W.0303.000000T0000Z-250911T2345Z/
Goshen WY-
533 PM MDT Thu Sep 11 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GOSHEN COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4237 10393 4244 10404 4256 10405 4274 10378
      4250 10349
TIME...MOT...LOC 2333Z 243DEG 32KT 4256 10381 

$$

NEC165-112345-
/O.CON.KCYS.SV.W.0303.000000T0000Z-250911T2345Z/
Sioux NE-
533 PM MDT Thu Sep 11 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR CENTRAL SIOUX COUNTY...

At 533 PM MDT, a severe thunderstorm was located 9 miles southeast of
Harrison, or 35 miles east of Lusk, moving northeast at 35 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...
Agate Fossil Beds National Monument.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4237 10393 4244 10404 4256 10405 4274 10378
      4250 10349
TIME...MOT...LOC 2333Z 243DEG 32KT 4256 10381 

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

$$

Mose


Action: Cancelled
Issued At: 2025-09-11 18:33:57

163 
WWUS55 KCYS 112333
SVSCYS

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

WYC015-112343-
/O.CAN.KCYS.SV.W.0303.000000T0000Z-250911T2345Z/
Goshen WY-
533 PM MDT Thu Sep 11 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GOSHEN COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4237 10393 4244 10404 4256 10405 4274 10378
      4250 10349
TIME...MOT...LOC 2333Z 243DEG 32KT 4256 10381 

$$

NEC165-112345-
/O.CON.KCYS.SV.W.0303.000000T0000Z-250911T2345Z/
Sioux NE-
533 PM MDT Thu Sep 11 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR CENTRAL SIOUX COUNTY...

At 533 PM MDT, a severe thunderstorm was located 9 miles southeast of
Harrison, or 35 miles east of Lusk, moving northeast at 35 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...
Agate Fossil Beds National Monument.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4237 10393 4244 10404 4256 10405 4274 10378
      4250 10349
TIME...MOT...LOC 2333Z 243DEG 32KT 4256 10381 

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

$$

Mose



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