Tornado Warning 9, NWS Riverton, WY

Issued

Jun 12, 2017, 6:32 PM MDT (00:32 UTC)

Expired

Jun 12, 2017, 7:00 PM MDT

In force

28 min

Issued by

NWS Riverton, WY

Area

Storm-based polygon

Tornado

Radar indicated

Hail

1.5 in

County Johnson County, WY

The Riverton/Lander radar (KRIW), 196 km from the middle of the area, began a volume at 00:35 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.

933 
WFUS55 KRIW 130032
TORRIW
WYC019-130100-
/O.NEW.KRIW.TO.W.0009.170613T0032Z-170613T0100Z/

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

The National Weather Service in Riverton has issued a

* Tornado Warning for...
  Central Johnson County in north central Wyoming...

* Until 700 PM MDT
    
* At 631 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 17 miles northwest of Fort Reno Historical Site, which
  is 21 miles north of Kaycee, moving north at 35 mph.

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

  SOURCE...Radar indicated rotation. A tornado was reported from 
           this storm just west of Kaycee. 

  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
  central Johnson County.

This includes the following highways...
 Interstate 25 between mile markers 270 and 297.
 Interstate 90 between mile markers 62 and 85.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4392 10628 4393 10684 4433 10689 4433 10618
TIME...MOT...LOC 0031Z 188DEG 29KT 4400 10650 

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

$$

McDonald

487 
WWUS55 KRIW 130049
SVSRIW

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

WYC019-130100-
/O.CON.KRIW.TO.W.0009.000000T0000Z-170613T0100Z/
Johnson-
649 PM MDT MON JUN 12 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR CENTRAL
JOHNSON COUNTY...
    
At 646 PM MDT, a confirmed funnel cloud was located 27 miles 
southeast of Buffalo, moving north at 35 mph.

HAZARD...Damaging tornado and ping pong ball size hail. 

SOURCE...Weather spotters confirmed funnel cloud. At 645 PM MDT, a 
         funnel cloud was reported about 25 miles south east of 
         Buffalo. Another possible location is 12 miles south 
         southwest of Buffalo, just west of I25. 

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 includes the following highways...
 Interstate 25 between mile markers 270 and 297.
 Interstate 90 between mile markers 62 and 85.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, tornadoes have been reported with this storm. 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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4392 10628 4393 10684 4433 10689 4433 10618
TIME...MOT...LOC 0046Z 188DEG 29KT 4412 10648 

TORNADO...OBSERVED
HAIL...1.50IN

$$

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.