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Home Return to list Severe Thunderstorm Warning 0232 Issued by the Cheyenne Forecast Office
Action: New Issued At: 2026-08-12 15:00:52
207
WUUS55 KCYS 122000
SVRCYS
WYC021-122045-
/O.NEW.KCYS.SV.W.0232.260812T2000Z-260812T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
200 PM MDT Wed Aug 12 2026
The National Weather Service in Cheyenne has issued a
* Severe Thunderstorm Warning for...
South central Laramie County in southeastern Wyoming...
* Until 245 PM MDT.
* At 159 PM MDT, a severe thunderstorm was located near Fox
Farm-College, or near Cheyenne, moving southeast at 25 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...
Cheyenne, Laramie County Fairgrounds at Archer, South Greeley
Highway, Fox Farm-College, South Cheyenne, Winchester Hills,
Carpenter, Bison Crossing, Ranchettes, Cowboy Ranch South, and
Grass Hills.
This includes Interstate 80 in Wyoming between mile markers 362 and
375.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4104 10489 4123 10470 4101 10426 4099 10471
4100 10483
TIME...MOT...LOC 1959Z 306DEG 23KT 4107 10475
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Rubin
Action: Continued Issued At: 2026-08-12 15:13:23
598
WWUS55 KCYS 122012
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
212 PM MDT Wed Aug 12 2026
WYC021-122045-
/O.CON.KCYS.SV.W.0232.000000T0000Z-260812T2045Z/
Laramie WY-
212 PM MDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR SOUTH CENTRAL LARAMIE COUNTY...
At 212 PM MDT, a severe thunderstorm was located 8 miles east of
Bison Crossing, or 11 miles southeast of Cheyenne, moving southeast
at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Cheyenne, Laramie County Fairgrounds at Archer, Carpenter, Bison
Crossing, Winchester Hills, Cowboy Ranch South, and Grass Hills.
This includes Interstate 80 in Wyoming between mile markers 367 and
375.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4116 10468 4117 10458 4101 10426 4099 10471
4105 10482
TIME...MOT...LOC 2012Z 306DEG 23KT 4102 10466
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Charnick
Action: Continued Issued At: 2026-08-12 15:30:23
144
WWUS55 KCYS 122029
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
229 PM MDT Wed Aug 12 2026
WYC021-122045-
/O.CON.KCYS.SV.W.0232.000000T0000Z-260812T2045Z/
Laramie WY-
229 PM MDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR SOUTH CENTRAL LARAMIE COUNTY...
At 229 PM MDT, a severe thunderstorm was located 11 miles southwest
of Carpenter, or 18 miles southeast of Cheyenne, moving southeast at
25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Personal weather station observed 61 mph gust.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Carpenter.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4113 10460 4101 10426 4099 10464 4104 10471
TIME...MOT...LOC 2029Z 306DEG 23KT 4096 10454
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
Charnick
Action: Expired Issued At: 2026-08-12 15:45:53 664 WWUS55 KCYS 122045 SVSCYS Severe Weather Statement National Weather Service Cheyenne WY 245 PM MDT Wed Aug 12 2026 WYC021-122055- /O.EXP.KCYS.SV.W.0232.000000T0000Z-260812T2045Z/ Laramie WY- 245 PM MDT Wed Aug 12 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LARAMIE COUNTY HAS EXPIRED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been allowed to expire. A Severe Thunderstorm Watch remains in effect until 900 PM MDT for southeastern Wyoming. && LAT...LON 4113 10460 4101 10426 4099 10464 4104 10471 TIME...MOT...LOC 2045Z 306DEG 23KT 4091 10445 $$ Charnick | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||