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Severe Thunderstorm Warning 0015
Issued by the Riverton Forecast Office

Action Issued Starts Expiration
New 2026-06-20 17:14:30 2026-06-20 17:14:00 2026-06-20 18:00:00
Expired 2026-06-20 17:50:47 2026-06-20 18:00:00


Action: New
Issued At: 2026-06-20 17:14:30

924 
WUUS55 KRIW 202214
SVRRIW
WYC003-019-043-202300-
/O.NEW.KRIW.SV.W.0015.260620T2214Z-260620T2300Z/

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

The National Weather Service in Riverton has issued a

* Severe Thunderstorm Warning for...
  Northwestern Johnson County in north central Wyoming...
  Southeastern Big Horn County in central Wyoming...
  Northeastern Washakie County in central Wyoming...

* Until 500 PM MDT.

* At 412 PM MDT, a severe thunderstorm was located near Ten Sleep,
  moving northeast at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Cloud Peak.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4456 10737 4456 10714 4395 10712 4415 10806
      4457 10778 4457 10737
TIME...MOT...LOC 2212Z 214DEG 30KT 4410 10746 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

Rowe


Action: Expired
Issued At: 2026-06-20 17:50:47

809 
WWUS55 KRIW 202250
SVSRIW

Severe Weather Statement
National Weather Service Riverton WY
450 PM MDT Sat Jun 20 2026

WYC003-019-043-202300-
/O.EXP.KRIW.SV.W.0015.000000T0000Z-260620T2300Z/
Johnson-Big Horn-Washakie-
450 PM MDT Sat Jun 20 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN JOHNSON...
SOUTHEASTERN BIG HORN AND NORTHEASTERN WASHAKIE COUNTIES WILL EXPIRE
AT 500 PM MDT...

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 will be allowed to expire.  However, gusty
winds are still possible with this thunderstorm.

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

&&

LAT...LON 4456 10737 4456 10714 4395 10712 4415 10806
      4457 10778 4457 10737
TIME...MOT...LOC 2250Z 214DEG 30KT 4435 10722 

$$

Rowe



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