036 
WUUS53 KUNR 122203
SVRUNR
WYC045-122300-
/O.NEW.KUNR.SV.W.0372.250912T2203Z-250912T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
403 PM MDT Fri Sep 12 2025

The National Weather Service in Rapid City has issued a

* Severe Thunderstorm Warning for...
  Central Weston County in northeastern Wyoming...

* Until 500 PM MDT.

* At 402 PM MDT, severe thunderstorms were located along a line
  extending from 10 miles south of Upton to 10 miles north of
  Rochelle, moving northeast at 20 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...
  Osage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4396 10432 4365 10487 4374 10500 4408 10469
TIME...MOT...LOC 2202Z 216DEG 16KT 4396 10469 4374 10492 

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

$$

JC

423 
WWUS53 KUNR 122214
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
414 PM MDT Fri Sep 12 2025

WYC045-122300-
/O.CON.KUNR.SV.W.0372.000000T0000Z-250912T2300Z/
Weston WY-
414 PM MDT Fri Sep 12 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MDT
FOR CENTRAL WESTON COUNTY...

At 414 PM MDT, severe thunderstorms were located along a line
extending from 7 miles south of Upton to 11 miles northwest of
Clareton, moving northeast at 15 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...
Osage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4396 10432 4369 10483 4379 10495 4408 10467
TIME...MOT...LOC 2214Z 241DEG 11KT 4400 10465 4378 10488 

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

$$

JC

723 
WWUS53 KUNR 122229
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
429 PM MDT Fri Sep 12 2025

WYC045-122300-
/O.CON.KUNR.SV.W.0372.000000T0000Z-250912T2300Z/
Weston WY-
429 PM MDT Fri Sep 12 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MDT
FOR NORTH CENTRAL WESTON COUNTY...

At 429 PM MDT, a severe thunderstorm was located 6 miles west of
Osage, or 19 miles northwest of Newcastle, moving east at 15 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...
Osage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4386 10452 4396 10467 4406 10460 4396 10432
TIME...MOT...LOC 2229Z 250DEG 15KT 4399 10456 

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

$$

JC

257 
WWUS53 KUNR 122257
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
457 PM MDT Fri Sep 12 2025

WYC045-122307-
/O.EXP.KUNR.SV.W.0372.000000T0000Z-250912T2300Z/
Weston WY-
457 PM MDT Fri Sep 12 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL WESTON COUNTY
WILL EXPIRE AT 500 PM MDT...

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

Remember, a Severe Thunderstorm Warning still remains in effect for
northern Weston County.

&&

LAT...LON 4386 10452 4396 10467 4406 10460 4396 10432
TIME...MOT...LOC 2257Z 216DEG 16KT 4408 10446 

$$

JC