Alert archive / Nebraska / Tornado Warnings in 2016

Tornado Warning 6, NWS Cheyenne, WY

July 6, 2016Box Butte County, Dawes County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jul 6, 2016, 3:14 PM MDT for Box Butte County, Dawes County, Nebraska. It was in force for 31 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 6, 2016, 3:14 PM MDT (21:14 UTC)
Expired: Jul 6, 2016, 3:45 PM MDT
In force: 31 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

Counties Box Butte County, NE, Dawes County, NE

The radar

The Rapid City radar (KUDX), 186 km from the middle of the area, began a volume at 21:16 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 6, 3:15 PM MDT	TORNADO	6 Sse Sand Canyon, NE

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 6, 2:21 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 9.2 hours before the alert went out and 180 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: 48 J/kg
Mixed-layer CIN: -380 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 429 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

227 
WFUS55 KCYS 062114
TORCYS
NEC013-045-062145-
/O.NEW.KCYS.TO.W.0006.160706T2114Z-160706T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
314 PM MDT WED JUL 6 2016

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

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

* UNTIL 345 PM MDT

* AT 314 PM MDT...A CONFIRMED TORNADO WAS LOCATED 10 MILES SOUTH OF
  INTERSECTION OF HIGHWAY 87 AND ANTELOPE ROAD...OR 14 MILES SOUTH OF
  HAY SPRINGS...MOVING EAST AT 20 MPH.

  HAZARD...DAMAGING TORNADO. 

  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. 

  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
  SOUTHEASTERN DAWES AND NORTHEASTERN BOX BUTTE COUNTIES.

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 4238 10288 4256 10284 4257 10277 4245 10277
      4244 10275 4237 10275
TIME...MOT...LOC 2114Z 269DEG 17KT 4248 10277 

TORNADO...OBSERVED
HAIL...<.75IN

$$

RUBIN

2 follow-up statements

943 
WWUS55 KCYS 062128
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
328 PM MDT WED JUL 6 2016

NEC013-045-062145-
/O.CON.KCYS.TO.W.0006.000000T0000Z-160706T2145Z/
DAWES NE-BOX BUTTE NE-
328 PM MDT WED JUL 6 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM MDT FOR
SOUTHEASTERN DAWES AND NORTHEASTERN BOX BUTTE COUNTIES...
    
AT 328 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 10 MILES SOUTH OF INTERSECTION OF HIGHWAY 87 AND ANTELOPE
ROAD...OR 13 MILES SOUTH OF HAY SPRINGS...MOVING EAST AT 20 MPH.

HAZARD...TORNADO. 

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
SOUTHEASTERN DAWES AND NORTHEASTERN BOX BUTTE 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.

&&

LAT...LON 4237 10281 4256 10281 4257 10277 4245 10277
      4244 10275 4237 10275
TIME...MOT...LOC 2128Z 269DEG 17KT 4248 10268 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RUBIN

749 
WWUS55 KCYS 062141
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
341 PM MDT WED JUL 6 2016

NEC013-045-062151-
/O.EXP.KCYS.TO.W.0006.000000T0000Z-160706T2145Z/
DAWES NE-BOX BUTTE NE-
341 PM MDT WED JUL 6 2016

...THE TORNADO WARNING FOR SOUTHEASTERN DAWES AND NORTHEASTERN BOX
BUTTE COUNTIES WILL EXPIRE AT 345 PM MDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM MDT FOR THE PANHANDLE
OF NEBRASKA.

LAT...LON 4237 10281 4256 10281 4257 10277 4245 10277
      4244 10275 4237 10275
TIME...MOT...LOC 2138Z 269DEG 17KT 4248 10268 

$$

RUBIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:50 PM MDT	Special Weather Statement	CYS	Dawes	40 min
Jul 6, 1:50 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	40 min
Jul 6, 3:07 PM MDT	Special Weather Statement	CYS	Sioux	53 min
Jul 6, 3:43 PM MDT	Special Weather Statement	CYS	Dawes	47 min
Jul 6, 4:08 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	45 min

Nearby

Tornado Warnings in Nebraska, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.