389 
WUUS55 KRIW 202015
SVRRIW
WYC013-017-025-202100-
/O.NEW.KRIW.SV.W.0009.260620T2015Z-260620T2100Z/

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

The National Weather Service in Riverton has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hot Springs County in central Wyoming...
  Northwestern Natrona County in central Wyoming...
  East central Fremont County in central Wyoming...

* Until 300 PM MDT.

* At 215 PM MDT, a severe thunderstorm was located near Hidden
  Valley, which is 8 miles northeast of Riverton, 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.

* This severe thunderstorm will be near...
  Hidden Valley and Boysen State Park around 220 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4270 10885 4352 10879 4350 10749 4262 10747
TIME...MOT...LOC 2015Z 273DEG 39KT 4312 10828 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Rowe

859 
WWUS55 KRIW 202036
SVSRIW

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

WYC013-017-025-202100-
/O.CON.KRIW.SV.W.0009.000000T0000Z-260620T2100Z/
Hot Springs-Natrona-Fremont-
236 PM MDT Sat Jun 20 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM MDT
FOR SOUTHEASTERN HOT SPRINGS...NORTHWESTERN NATRONA AND EAST CENTRAL
FREMONT COUNTIES...

At 236 PM MDT, a severe thunderstorm was located 11 miles southeast
of Shoshoni, 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.

This severe thunderstorm will remain over mainly rural areas of
southeastern Hot Springs, northwestern Natrona and east central
Fremont Counties, including the following locations... Arapahoe
Elementary School, Midvale, St Stephens, Bonneville, Riverton
Landfill, Fremont County Fairgrounds, and Riverton Regional Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4268 10856 4352 10879 4350 10749 4262 10747
TIME...MOT...LOC 2036Z 273DEG 39KT 4311 10797 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Rowe