Tornado Warning 3, NWS Riverton, WY

Issued

Jun 12, 2017, 4:58 PM MDT (22:58 UTC)

Expired

Jun 12, 2017, 5:30 PM MDT

In force

32 min

Issued by

NWS Riverton, WY

Area

Storm-based polygon

Tornado

Radar indicated

Hail

1.5 in

Counties Johnson County, WY, Natrona County, WY

The Riverton/Lander radar (KRIW), 143 km from the middle of the area, began a volume at 23:00 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.

997 
WFUS55 KRIW 122258
TORRIW
WYC019-025-122330-
/O.NEW.KRIW.TO.W.0003.170612T2258Z-170612T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Riverton WY
458 PM MDT MON JUN 12 2017

The National Weather Service in Riverton has issued a

* Tornado Warning for...
  South central Johnson County in north central Wyoming...
  North central Natrona County in central Wyoming...

* Until 530 PM MDT
    
* At 457 PM MDT, a severe thunderstorm capable of producing a tornado
  was located near Hole In The Wall, which is 18 miles southwest of
  Kaycee, moving north at 30 mph.

  HAZARD...Tornado and ping pong ball size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Hole In The Wall around 510 PM MDT. 

Other locations impacted by this tornadic thunderstorm include Willow
Creek School and Barnum.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4341 10676 4344 10702 4373 10701 4370 10665
TIME...MOT...LOC 2257Z 201DEG 25KT 4349 10686 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

McDonald

197 
WWUS55 KRIW 122318
SVSRIW

Severe Weather Statement
National Weather Service Riverton WY
518 PM MDT MON JUN 12 2017

WYC025-122327-
/O.CAN.KRIW.TO.W.0003.000000T0000Z-170612T2330Z/
Natrona-
518 PM MDT MON JUN 12 2017

...THE TORNADO WARNING FOR NORTH CENTRAL NATRONA COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 1000 PM MDT for
north central Wyoming.

LAT...LON 4353 10671 4357 10695 4373 10699 4370 10665
TIME...MOT...LOC 2317Z 201DEG 25KT 4363 10679 

$$

WYC019-122330-
/O.CON.KRIW.TO.W.0003.000000T0000Z-170612T2330Z/
Johnson-
518 PM MDT MON JUN 12 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR SOUTH
CENTRAL JOHNSON COUNTY...
    
At 517 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Hole In The Wall, which is 9 miles southwest of
Kaycee, moving north at 30 mph.

HAZARD...Tornado and golf ball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This tornadic thunderstorm will remain over mainly rural areas of
south central Johnson County, including the following locations:
Barnum.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4353 10671 4357 10695 4373 10699 4370 10665
TIME...MOT...LOC 2317Z 201DEG 25KT 4363 10679 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

McDonald

Tornado Warnings in Wyoming, 2017Every tornado warning in 2017Tornadoes in 2017

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.