Tornado Warning 27, NWS Cheyenne, WY

Issued

Jun 12, 2017, 10:23 PM MDT (04:23 UTC)

Expired

Jun 12, 2017, 11:00 PM MDT

In force

37 min

Issued by

NWS Cheyenne, WY

Area

Storm-based polygon

Tornado

Radar indicated

Hail

1.5 in

Counties Dawes County, NE, Sioux County, NE

The Rapid City radar (KUDX), 155 km from the middle of the area, began a volume at 04:22 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.

124 
WFUS55 KCYS 130423
TORCYS
NEC045-165-130500-
/O.NEW.KCYS.TO.W.0027.170613T0423Z-170613T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cheyenne WY
1023 PM MDT MON JUN 12 2017

The National Weather Service in Cheyenne has issued a

* Tornado Warning for...
  Northwestern Dawes County in the Panhandle of Nebraska...
  Northeastern Sioux County in the Panhandle of Nebraska...

* Until 1100 PM MDT
    
* At 1022 PM MDT, a severe thunderstorm capable of producing a
  tornado was located 9 miles west of Fort Robinson Campground, or 34
  miles west of Chadron, moving northeast at 45 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 tornadic thunderstorm will remain over mainly rural areas of
  northwestern Dawes and northeastern Sioux Counties.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4261 10364 4274 10384 4300 10359 4300 10322
      4297 10317
TIME...MOT...LOC 0422Z 219DEG 39KT 4273 10367 

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

$$

Levin

573 
WWUS55 KCYS 130440
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1040 PM MDT MON JUN 12 2017

NEC045-165-130500-
/O.CON.KCYS.TO.W.0027.000000T0000Z-170613T0500Z/
Dawes NE-Sioux NE-
1040 PM MDT MON JUN 12 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM MDT FOR
NORTHWESTERN DAWES AND NORTHEASTERN SIOUX COUNTIES...
    
At 1040 PM MDT, a severe thunderstorm capable of producing a tornado
was located 11 miles east of Montrose, or 25 miles west of Chadron,
moving northeast at 45 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 tornadic thunderstorm will remain over mainly rural areas of
northwestern Dawes and northeastern Sioux Counties.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4270 10352 4282 10376 4300 10359 4300 10322
      4297 10317
TIME...MOT...LOC 0440Z 219DEG 39KT 4288 10350 

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

$$

Levin

153 
WWUS55 KCYS 130459
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1059 PM MDT MON JUN 12 2017

NEC045-165-130507-
/O.EXP.KCYS.TO.W.0027.000000T0000Z-170613T0500Z/
Dawes NE-Sioux NE-
1059 PM MDT MON JUN 12 2017

...THE TORNADO WARNING FOR NORTHWESTERN DAWES AND NORTHEASTERN SIOUX
COUNTIES WILL EXPIRE AT 1100 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.

LAT...LON 4270 10352 4282 10376 4300 10359 4300 10322
      4297 10317
TIME...MOT...LOC 0457Z 219DEG 39KT 4301 10336 

$$

Levin

Tornado Warnings in Nebraska, 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.