Severe Thunderstorm Warning 13, NWS Riverton, WY

Issued

Aug 6, 2021, 3:47 PM MDT (21:47 UTC)

Expired

Aug 6, 2021, 4:15 PM MDT

In force

28 min

Issued by

NWS Riverton, WY

Area

Storm-based polygon

Hail

1.0 in

Wind

60.0 mph

County Fremont County, WY

The Riverton/Lander radar (KRIW), 14 km from the middle of the area, began a volume at 21:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

460 
WUUS55 KRIW 062147
SVRRIW
WYC013-062215-
/O.NEW.KRIW.SV.W.0013.210806T2147Z-210806T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Riverton WY
347 PM MDT Fri Aug 6 2021

The National Weather Service in Riverton has issued a

* Severe Thunderstorm Warning for...
  Central Fremont County in central Wyoming...

* Until 415 PM MDT.

* At 346 PM MDT, a severe thunderstorm was located near Ethete, or 12
  miles east of Fort Washakie, moving east at 45 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.

* This severe thunderstorm will be near...
  Arapahoe around 355 PM MDT.
  Riverton around 400 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4292 10880 4296 10885 4306 10884 4324 10829
      4295 10817
TIME...MOT...LOC 2146Z 249DEG 39KT 4302 10864 

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

$$

Myers

275 
WWUS55 KRIW 062159
SVSRIW

Severe Weather Statement
National Weather Service Riverton WY
359 PM MDT Fri Aug 6 2021

WYC013-062215-
/O.CON.KRIW.SV.W.0013.000000T0000Z-210806T2215Z/
Fremont-
359 PM MDT Fri Aug 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MDT
FOR CENTRAL FREMONT COUNTY...

At 359 PM MDT, a severe thunderstorm was located near Riverton,
moving east at 45 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.

This severe thunderstorm will remain over mainly rural areas of
central Fremont County, including the following locations... St
Stephens, 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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4296 10864 4298 10869 4311 10868 4324 10829
      4298 10818
TIME...MOT...LOC 2159Z 249DEG 39KT 4307 10846 

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

$$

Myers

826 
WWUS55 KRIW 062214
SVSRIW

Severe Weather Statement
National Weather Service Riverton WY
414 PM MDT Fri Aug 6 2021

WYC013-062222-
/O.EXP.KRIW.SV.W.0013.000000T0000Z-210806T2215Z/
Fremont-
414 PM MDT Fri Aug 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FREMONT COUNTY WILL
EXPIRE AT 415 PM MDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However small hail and gusty winds are still
possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 800 PM MDT for
central Wyoming.

LAT...LON 4296 10864 4298 10869 4311 10868 4324 10829
      4298 10818
TIME...MOT...LOC 2212Z 249DEG 39KT 4312 10829 

$$

Myers

Severe Thunderstorm Warnings in Wyoming, 2021Every severe thunderstorm warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.