Several severe thunderstorms moved across the area this day. The most imapctful storm hit Cheyenne where baseball sized hail was observed in the city of Cheyenne, WY.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
Several severe thunderstorms moved across the area this day. The most imapctful storm hit Cheyenne where baseball sized hail was observed in the city of Cheyenne, WY.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before the first event at Aug 1, 1:33 PM MST, 2 hours 45 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Cheyenne WY 234 PM MDT Fri Aug 1 2025 NEZ002-003-019>021-054-055-095-096-WYZ101>119-022045- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-Niobrara County- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- 234 PM MDT Fri Aug 1 2025 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT - There is a Slight Risk (Level 2 of 5) for severe weather Friday afternoon and evening east of the Laramie Range. All modes of severe weather are possible: hail, winds, tornadoes, and flash flooding. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY - There is a Marginal Risk of severe weather for Saturday, mainly across western Nebraska. Primary hazards look to be hail, wind, and flash flooding. - Drier and warmer conditions return mid-week and continue through the weekend. .Spotter information statement... Spotter reports for severe weather and heavy rainfall are encouraged.
Special Weather Statement
National Weather Service Cheyenne WY
209 PM MDT Fri Aug 1 2025
WYZ103-105-106-115-012045-
Shirley Basin WY-
Central Laramie Range and Southwest Platte County WY-
North Laramie Range WY-Laramie Valley WY-
209 PM MDT Fri Aug 1 2025
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL ALBANY COUNTY
THROUGH 245 PM MDT...
At 209 PM MDT, Doppler radar was tracking a strong thunderstorm near
Wheatland Reservoir Number 3, or 37 miles north of Laramie, moving
east at 15 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Sybille Canyon, Wheatland Reservoir Number 3, and Flying X Ranch.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4175 10574 4193 10575 4199 10533 4172 10531
TIME...MOT...LOC 2009Z 267DEG 12KT 4185 10565
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
MMSpecial Weather Statement
National Weather Service Cheyenne WY
430 PM MDT Fri Aug 1 2025
WYZ117-118-012300-
Central Laramie County WY-South Laramie Range Foothills WY-
430 PM MDT Fri Aug 1 2025
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN LARAMIE COUNTY
THROUGH 500 PM MDT...
At 430 PM MDT, Doppler radar was tracking a strong thunderstorm over
Rocking Star Ranch, or 12 miles northwest of Cheyenne, moving east at
10 mph.
HAZARD...Wind gusts up to 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Cheyenne, Happy Valley, Federal, Rocking Star Ranch, Silver Sage
Estates, Ranchettes, Cheyenne Regional Airport, Warren AFB, Frontier
Park, North Cheyenne, and Fox Farm-College.
This includes Interstate 25 in Wyoming between mile markers 11 and
27.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Tornado Watch remains in effect until 1000 PM MDT for southeastern
Wyoming.
&&
LAT...LON 4113 10510 4130 10513 4139 10481 4113 10475
TIME...MOT...LOC 2230Z 258DEG 8KT 4124 10499
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
KMThe Cheyenne radar (KCYS), 27 km away, was scanning. The volume nearest the first event began at 23:15 UTC.
12 hail, 1 thunderstorm wind. Local standard time, as filed.
Trained spottered reported half dollar sized hail 18 miles west-northwest of Cheyenne.
Trained spottered measured a wind gust of 50 kts.
Trained spotter reported half dollar sized hail 13 miles west of Cheyenne.
Mping report of ping pong ball sized hail.
Mping report of hen egg sized hail.
Mping report of ping pong ball sized hail.
Public report of golf ball sized hail.
Mping report of ping pong ball sized hail.
Emergency manager reported base ball sized hail in Cheyenne.|Estimated property damage citywide from all reports with this event total at least $1 million per Laramie County EMA.
Mping report of ping pong ball sized hail.
Mping report of hen egg sized hail.
Mping report of tennis ball sized hail.
Trained spotter reported hail sized up to 3 inches via SM with picture evidence.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2025Every state in 2025This day in weather historyWarnings in Wyoming, August 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1281296, 1281309, 1281297, 1281298, 1281299, 1281301, 1281302, 1281303, 1281304, 1281305, 1281306, 1281307, 1281308.