Tornado Warning 11, NWS Cheyenne, WY

Issued

Jun 12, 2017, 4:45 PM MDT (22:45 UTC)

Expired

Jun 12, 2017, 5:05 PM MDT

In force

20 min

Issued by

NWS Cheyenne, WY

Area

Storm-based polygon

Tornado

Observed

Hail

1.75 in

County Laramie County, WY

The Cheyenne radar (KCYS), 36 km from the middle of the area, began a volume at 22:44 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.

306 
WFUS55 KCYS 122245
TORCYS
WYC021-122330-
/O.NEW.KCYS.TO.W.0011.170612T2245Z-170612T2330Z/

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

The National Weather Service in Cheyenne has issued a

* Tornado Warning for...
  North central Laramie County in southeastern Wyoming...

* Until 530 PM MDT
    
* At 444 PM MDT, a tornado producing storm was located 9 miles
  northeast of North Cheyenne, or 14 miles northeast of Cheyenne,
  moving north at 15 mph.

  HAZARD...Damaging tornado and golf ball size hail. 

  SOURCE...Storm Spotters and National Weather Service Employees 
           confirmed multiple tornadoes about 12 miles northeast of 
           Cheyenne. 

  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
  north central Laramie County.

This does not include the city of Cheyenne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4129 10476 4159 10485 4159 10465 4156 10465
      4157 10427 4130 10458
TIME...MOT...LOC 2244Z 167DEG 12KT 4133 10468 

TORNADO...OBSERVED
HAIL...1.75IN

$$

Hammer

190 
WWUS55 KCYS 122305
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
505 PM MDT MON JUN 12 2017

WYC021-122314-
/O.CAN.KCYS.TO.W.0011.000000T0000Z-170612T2330Z/
Laramie WY-
505 PM MDT MON JUN 12 2017

...THE TORNADO WARNING FOR NORTH CENTRAL LARAMIE COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.  However small hail and
gusty winds are still possible with this thunderstorm.

A tornado watch remains in effect until 800 PM MDT for southeastern
Wyoming.

LAT...LON 4129 10476 4159 10485 4159 10465 4156 10465
      4157 10427 4130 10458
TIME...MOT...LOC 2302Z 167DEG 12KT 4140 10470 

$$

Levin

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.