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Home Return to list Severe Thunderstorm Warning 0090 Issued by the Cheyenne Forecast Office
Action: New Issued At: 2026-06-20 18:09:02
286
WUUS55 KCYS 202308
SVRCYS
WYC009-015-027-031-210015-
/O.NEW.KCYS.SV.W.0090.260620T2308Z-260621T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
508 PM MDT Sat Jun 20 2026
The National Weather Service in Cheyenne has issued a
* Severe Thunderstorm Warning for...
Niobrara County in east central Wyoming...
Northern Goshen County in southeastern Wyoming...
Northern Platte County in southeastern Wyoming...
Eastern Converse County in east central Wyoming...
* Until 615 PM MDT.
* At 508 PM MDT, severe thunderstorms were located along a line
extending from 13 miles north of Manning Ranch to Bennett Hill
Campground to near Harris Park, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Lusk, Guernsey, Fort Laramie, Glendo, Manville, Hartville, Orin,
Van Tassell, Mule Creek Junction, Sibley Peak, Dull Center,
Guernsey State Park, Pine Ridge Estates, Prairie Center, Keeline,
Oregon Trail Ruts State Historic Site, Dwyer Junction, Fort Laramie
National Historic Site, Rawhide Buttes, and Bennett Hill
Campground.
This includes Interstate 25 in Wyoming between mile markers 86 and
124.
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 4247 10406 4211 10456 4216 10528 4243 10528
4243 10532 4268 10515 4350 10512 4350 10406
TIME...MOT...LOC 2308Z 261DEG 41KT 4319 10494 4252 10498 4229 10525
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Natoli
Action: Continued Issued At: 2026-06-20 18:10:02
302
WWUS55 KCYS 202309
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
509 PM MDT Sat Jun 20 2026
WYC009-015-027-031-210015-
/O.CON.KCYS.SV.W.0090.000000T0000Z-260621T0015Z/
Niobrara WY-Goshen WY-Platte WY-Converse WY-
509 PM MDT Sat Jun 20 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT
FOR NIOBRARA...NORTHERN GOSHEN...NORTHERN PLATTE AND EASTERN CONVERSE
COUNTIES...
At 509 PM MDT, severe thunderstorms were located along a line
extending from 13 miles north of Manning Ranch to Bennett Hill
Campground to near Harris Park, moving east at 45 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Lusk, Guernsey, Fort Laramie, Glendo, Manville, Hartville, Orin, Van
Tassell, Mule Creek Junction, Sibley Peak, Dull Center, Guernsey
State Park, Pine Ridge Estates, Prairie Center, Keeline, Oregon Trail
Ruts State Historic Site, Dwyer Junction, Fort Laramie National
Historic Site, Rawhide Buttes, and Bennett Hill Campground.
This includes Interstate 25 in Wyoming between mile markers 86 and
124.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
&&
LAT...LON 4247 10406 4211 10456 4216 10528 4243 10528
4243 10532 4268 10515 4350 10512 4350 10406
TIME...MOT...LOC 2309Z 270DEG 41KT 4319 10494 4252 10498 4229 10525
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Natoli
Action: Cancelled Issued At: 2026-06-20 18:44:03
447
WWUS55 KCYS 202343
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
543 PM MDT Sat Jun 20 2026
WYC009-202352-
/O.CAN.KCYS.SV.W.0090.000000T0000Z-260621T0015Z/
Converse WY-
543 PM MDT Sat Jun 20 2026
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CONVERSE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southeastern and east central Wyoming.
&&
LAT...LON 4247 10406 4211 10456 4216 10515 4262 10489
4350 10490 4350 10406
TIME...MOT...LOC 2342Z 270DEG 41KT 4325 10445 4258 10450 4235 10477
$$
WYC015-027-031-210015-
/O.CON.KCYS.SV.W.0090.000000T0000Z-260621T0015Z/
Niobrara WY-Goshen WY-Platte WY-
543 PM MDT Sat Jun 20 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT
FOR NIOBRARA...NORTHERN GOSHEN AND NORTHEASTERN PLATTE COUNTIES...
At 542 PM MDT, severe thunderstorms were located along a line
extending from 9 miles west of Redbird to Rawhide Buttes to near
Hartville, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lusk, Guernsey, Fort Laramie, Manville, Hartville, Van Tassell, Mule
Creek Junction, Guernsey State Park, Pine Ridge Estates, Prairie
Center, Keeline, Oregon Trail Ruts State Historic Site, Dwyer
Junction, Fort Laramie National Historic Site, Rawhide Buttes, Lance
Creek, Register Cliff State Historic Site, Sandy Beach Campground,
Sandy Cove Campground, and Two Moon Campground.
This includes Interstate 25 in Wyoming between mile markers 87 and
100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
&&
LAT...LON 4247 10406 4211 10456 4216 10515 4262 10489
4350 10490 4350 10406
TIME...MOT...LOC 2342Z 270DEG 41KT 4325 10445 4258 10450 4235 10477
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Natoli
Action: Continued Issued At: 2026-06-20 18:44:03
447
WWUS55 KCYS 202343
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
543 PM MDT Sat Jun 20 2026
WYC009-202352-
/O.CAN.KCYS.SV.W.0090.000000T0000Z-260621T0015Z/
Converse WY-
543 PM MDT Sat Jun 20 2026
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CONVERSE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southeastern and east central Wyoming.
&&
LAT...LON 4247 10406 4211 10456 4216 10515 4262 10489
4350 10490 4350 10406
TIME...MOT...LOC 2342Z 270DEG 41KT 4325 10445 4258 10450 4235 10477
$$
WYC015-027-031-210015-
/O.CON.KCYS.SV.W.0090.000000T0000Z-260621T0015Z/
Niobrara WY-Goshen WY-Platte WY-
543 PM MDT Sat Jun 20 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT
FOR NIOBRARA...NORTHERN GOSHEN AND NORTHEASTERN PLATTE COUNTIES...
At 542 PM MDT, severe thunderstorms were located along a line
extending from 9 miles west of Redbird to Rawhide Buttes to near
Hartville, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lusk, Guernsey, Fort Laramie, Manville, Hartville, Van Tassell, Mule
Creek Junction, Guernsey State Park, Pine Ridge Estates, Prairie
Center, Keeline, Oregon Trail Ruts State Historic Site, Dwyer
Junction, Fort Laramie National Historic Site, Rawhide Buttes, Lance
Creek, Register Cliff State Historic Site, Sandy Beach Campground,
Sandy Cove Campground, and Two Moon Campground.
This includes Interstate 25 in Wyoming between mile markers 87 and
100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
&&
LAT...LON 4247 10406 4211 10456 4216 10515 4262 10489
4350 10490 4350 10406
TIME...MOT...LOC 2342Z 270DEG 41KT 4325 10445 4258 10450 4235 10477
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Natoli
Action: Expired Issued At: 2026-06-20 19:15:34
362
WWUS55 KCYS 210015
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
615 PM MDT Sat Jun 20 2026
WYC015-027-031-210022-
/O.EXP.KCYS.SV.W.0090.000000T0000Z-260621T0015Z/
Niobrara WY-Goshen WY-Platte WY-
615 PM MDT Sat Jun 20 2026
...THE SEVERE THUNDERSTORM WARNING FOR NIOBRARA...NORTHERN GOSHEN AND
NORTHEASTERN PLATTE COUNTIES WILL EXPIRE AT 615 PM MDT...
Another Severe Thunderstorm Warning has been issued for the same
line of storms. This includes far eastern Niobrara County and
northern Goshen county.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southeastern and east central Wyoming.
&&
LAT...LON 4247 10406 4211 10456 4216 10515 4262 10489
4350 10490 4350 10406
TIME...MOT...LOC 0012Z 270DEG 41KT 4330 10402 4263 10407 4240 10434
$$
Natoli
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