917 
WUUS55 KCYS 202040
SVRCYS
WYC007-202130-
/O.NEW.KCYS.SV.W.0083.260620T2040Z-260620T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
240 PM MDT Sat Jun 20 2026

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Northeastern Carbon County in south central Wyoming...

* Until 330 PM MDT.

* At 239 PM MDT, severe thunderstorms were located along a line
  extending from near Dome Rock to Seminoe State Park to 8 miles
  north of Dugway Campground, moving east at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Hanna, Sinclair, Medicine Bow, Elk Mountain, Seminoe Campground,
  Fort Steele Historic Site, Shirley Basin, Kortes Dam, Seminoe State
  Park, Miracle Mile, Seminoe Dam, Prior Flat Campground, Dugway
  Campground, and Dome Rock.

This includes Interstate 80 in Wyoming between mile markers 217 and
262.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 4207 10712 4243 10713 4243 10607 4197 10607
      4165 10639 4173 10720
TIME...MOT...LOC 2039Z 248DEG 41KT 4226 10683 4208 10685 4198 10704 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

Natoli

761 
WWUS55 KCYS 202109
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
309 PM MDT Sat Jun 20 2026

WYC007-202130-
/O.CON.KCYS.SV.W.0083.000000T0000Z-260620T2130Z/
Carbon WY-
309 PM MDT Sat Jun 20 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MDT
FOR NORTHEASTERN CARBON COUNTY...

At 309 PM MDT, severe thunderstorms were located along a line
extending from near Prior Flat Campground to 16 miles southeast of
Dome Rock to 7 miles southeast of Seminoe State Park, moving east at
20 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...
Hanna, Medicine Bow, Elk Mountain, Seminoe Campground, Miracle Mile,
Fort Steele Historic Site, Shirley Basin, Seminoe Dam, Prior Flat
Campground, Kortes Dam, Dome Rock, and Seminoe State Park.

This includes Interstate 80 in Wyoming between mile markers 223 and
262.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 4207 10691 4243 10700 4243 10607 4197 10607
      4165 10639 4172 10709
TIME...MOT...LOC 2109Z 265DEG 19KT 4229 10655 4211 10657 4201 10676 

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

$$

Natoli

503 
WWUS55 KCYS 202129
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
329 PM MDT Sat Jun 20 2026

WYC007-202138-
/O.EXP.KCYS.SV.W.0083.000000T0000Z-260620T2130Z/
Carbon WY-
329 PM MDT Sat Jun 20 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CARBON COUNTY
WILL EXPIRE AT 330 PM MDT...

Another Severe Thunderstorm Warning has been issued for eastern 
Carbon County until 430 PM MDT.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
south central and southeastern Wyoming.


&&

LAT...LON 4207 10691 4243 10700 4243 10607 4197 10607
      4165 10639 4172 10709
TIME...MOT...LOC 2128Z 248DEG 41KT 4237 10629 4219 10631 4209 10650 

$$

Natoli