Alert archive / Nebraska / Tornado Warnings in 2014

Tornado Warning 16, NWS Cheyenne, WY

July 22, 2014Box Butte County, Dawes County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jul 22, 2014, 9:55 PM MDT for Box Butte County, Dawes County, Nebraska. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 22, 2014, 9:55 PM MDT (03:55 UTC)
Expired: Jul 22, 2014, 10:30 PM MDT
In force: 35 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Box Butte County, NE, Dawes County, NE

The radar

The Rapid City radar (KUDX), 178 km from the middle of the area, began a volume at 03:55 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.

What was reported inside it

Time	Report	Where	Remark
Jul 22, 10:00 PM MDT	FUNNEL CLOUD	11 N Wild Horse Butte, NE	CONTINUOUS LIGHTNING WITH STORM. MESOCYCLONE SPINNING. CAN SEE LOW SCUD UNDER WALL CLOUD.

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

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 3.9 hours before the alert went out and 171 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 939 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 1873 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

626 
WFUS55 KCYS 230355
TORCYS
NEC013-045-230430-
/O.NEW.KCYS.TO.W.0016.140723T0355Z-140723T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
955 PM MDT TUE JUL 22 2014

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN BOX BUTTE COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTHEASTERN DAWES COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 1030 PM MDT

* AT 950 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 10 MILES NORTHEAST OF BOX BUTTE DAM...AND
  MOVING SOUTHEAST AT 35 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION. TRAINED WEATHER SPOTTERS        
           REPORTED A WELL DEFINED WALL CLOUD WITH THIS STORM. 

  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 AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
  BOX BUTTE AND SOUTHEASTERN DAWES COUNTIES.

THIS REPLACES THE TORNADO WARNING WHICH WAS PREVIOUSLY IN EFFECT FOR 
DAWES COUNTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4223 10299 4244 10307 4284 10294 4283 10278
      4280 10278 4278 10277 4249 10277 4244 10274
      4220 10274
TIME...MOT...LOC 0354Z 318DEG 36KT 4249 10288

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

$$

HAMMER

3 follow-up statements

965 
WWUS55 KCYS 230405
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1005 PM MDT TUE JUL 22 2014

NEC013-045-230430-
/O.CON.KCYS.TO.W.0016.000000T0000Z-140723T0430Z/
BOX BUTTE NE-DAWES NE-
1005 PM MDT TUE JUL 22 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN DAWES AND
NORTHEASTERN BOX BUTTE COUNTIES UNTIL 1030 PM MDT...

AT 1004 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 9 MILES NORTH OF WILD HORSE BUTTE...AND MOVING SOUTHEAST
AT 35 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.

LOCATIONS IMPACTED INCLUDE...
WILD HORSE BUTTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4229 10299 4257 10302 4268 10277 4249 10277
      4244 10274 4220 10274
TIME...MOT...LOC 0405Z 324DEG 31KT 4239 10285

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

$$

HAMMER

402 
WWUS55 KCYS 230420
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1020 PM MDT TUE JUL 22 2014

NEC013-045-230430-
/O.CON.KCYS.TO.W.0016.000000T0000Z-140723T0430Z/
BOX BUTTE NE-DAWES NE-
1020 PM MDT TUE JUL 22 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN DAWES AND
NORTHEASTERN BOX BUTTE COUNTIES UNTIL 1030 PM MDT...

AT 1013 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES NORTH OF WILD HORSE BUTTE...AND MOVING SOUTHEAST
AT 35 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.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME EASTERN BOX BUTTE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4225 10276 4238 10293 4253 10291 4255 10278
      4249 10277 4244 10274
TIME...MOT...LOC 0420Z 324DEG 31KT 4230 10275

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

$$

HAMMER

910 
WWUS55 KCYS 230429
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1029 PM MDT TUE JUL 22 2014

NEC013-045-230439-
/O.EXP.KCYS.TO.W.0016.000000T0000Z-140723T0430Z/
BOX BUTTE NE-DAWES NE-
1029 PM MDT TUE JUL 22 2014

...THE TORNADO WARNING FOR SOUTHEASTERN DAWES AND NORTHEASTERN BOX
BUTTE COUNTIES WILL EXPIRE AT 1030 PM MDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4225 10276 4238 10293 4253 10291 4255 10278
      4249 10277 4244 10274
TIME...MOT...LOC 0429Z 324DEG 31KT 4224 10269

$$

HAMMER

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 6:56 PM MDT	Special Weather Statement	CYS	Scotts Bluff	49 min
Jul 22, 8:47 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	58 min
Jul 22, 9:24 PM MDT	Tornado Warning	CYS	Dawes	36 min

Nearby

Tornado Warnings in Nebraska, 2014 Every tornado warning in 2014 Tornadoes in 2014

Sources

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.