Alert archive / Nebraska / Tornado Warnings in 2016

Tornado Warning 9, NWS Cheyenne, WY

July 27, 2016Banner County, Scotts Bluff County, Sioux County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jul 27, 2016, 5:59 PM MDT for Banner County, Scotts Bluff County, Sioux County, Nebraska. It was in force for 31 min. 3 reports 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 27, 2016, 5:59 PM MDT (23:59 UTC)
Expired: Jul 27, 2016, 6:30 PM MDT
In force: 31 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Banner County, NE, Scotts Bluff County, NE, Sioux County, NE

The radar

The Cheyenne radar (KCYS), 113 km from the middle of the area, began a volume at 00:03 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
Jul 27, 6:02 PM MDT	HAIL 1.75	3 E Morrill, NE
Jul 27, 6:08 PM MDT	HAIL 1.75	Mitchell, NE
Jul 27, 6:14 PM MDT	HAIL 1.5	4 S Mitchell, NE

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

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 12.0 hours before the alert went out and 229 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: 26 J/kg
Mixed-layer CIN: -467 J/kg
Mixed-layer LCL: 2359 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

269 
WFUS55 KCYS 272359
TORCYS
NEC007-157-165-280030-
/O.NEW.KCYS.TO.W.0009.160727T2359Z-160728T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
559 PM MDT WED JUL 27 2016

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BANNER COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTH CENTRAL SIOUX COUNTY IN THE PANHANDLE OF NEBRASKA...
  WESTERN SCOTTS BLUFF COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 630 PM MDT
    
* AT 559 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER MITCHELL...OR 9 MILES WEST OF
  SCOTTSBLUFF...MOVING SOUTH AT 40 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. 

* THIS DANGEROUS STORM WILL BE NEAR...
  SCOTTSBLUFF...TERRYTOWN AND HUBBARD HILL AROUND 605 PM MDT. 
  GERING AND SCOTTS BLUFF NATIONAL MONUMENT AROUND 610 PM MDT. 
  WILDCAT HILLS CAMPGROUND AND WILDCAT HILLS STATE RECREATION AREA 
  AROUND 620 PM MDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING ISSUED
FOR THE SAME AREA.

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.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE.

&&

LAT...LON 4202 10397 4203 10374 4166 10353 4163 10401
TIME...MOT...LOC 2359Z 346DEG 36KT 4191 10383 

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

$$

CLAYCOMB

2 follow-up statements

361 
WWUS55 KCYS 280017
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
617 PM MDT WED JUL 27 2016

NEC165-280026-
/O.CAN.KCYS.TO.W.0009.000000T0000Z-160728T0030Z/
SIOUX NE-
617 PM MDT WED JUL 27 2016

...THE TORNADO WARNING FOR SOUTH CENTRAL SIOUX COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4194 10391 4196 10374 4166 10359 4163 10401
TIME...MOT...LOC 0016Z 343DEG 29KT 4182 10381 

$$

NEC007-157-280030-
/O.CON.KCYS.TO.W.0009.000000T0000Z-160728T0030Z/
BANNER NE-SCOTTS BLUFF NE-
617 PM MDT WED JUL 27 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR
NORTHWESTERN BANNER AND WESTERN SCOTTS BLUFF COUNTIES...
    
AT 616 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER HUBBARD HILL...OR 8 MILES SOUTHWEST OF
SCOTTSBLUFF... MOVING SOUTH 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. 

THIS DANGEROUS STORM WILL BE NEAR...
  GERING AROUND 620 PM MDT. 
  WILDCAT HILLS CAMPGROUND AND WILDCAT HILLS STATE RECREATION AREA 
  AROUND 630 PM MDT. 

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.

IF A TORNADO OR OTHER SEVERE WEATHER IS SPOTTED...REPORT IT TO THE
NATIONAL WEATHER SERVICE OR YOUR LOCAL NEAREST LAW ENFORCEMENT AGENCY
WHO WILL SEND YOUR REPORT. THIS ACT MAY SAVE LIVES OF OTHERS IN THE
PATH OF DANGEROUS WEATHER.

&&

LAT...LON 4194 10391 4196 10374 4166 10359 4163 10401
TIME...MOT...LOC 0016Z 343DEG 29KT 4182 10381 

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

$$

CLAYCOMB

446 
WWUS55 KCYS 280024
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
624 PM MDT WED JUL 27 2016

NEC007-157-280032-
/O.EXP.KCYS.TO.W.0009.000000T0000Z-160728T0030Z/
BANNER NE-SCOTTS BLUFF NE-
624 PM MDT WED JUL 27 2016

...THE TORNADO WARNING FOR NORTHWESTERN BANNER AND WESTERN SCOTTS
BLUFF COUNTIES WILL EXPIRE AT 630 PM MDT...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER LARGE HAIL
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
CHEYENNE.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
WESTERN SCOTTSBLUFF AND NORTHERN BANNER COUNTIES.

LAT...LON 4194 10391 4196 10374 4166 10359 4163 10401
TIME...MOT...LOC 0018Z 346DEG 36KT 4182 10381 

$$

CLAYCOMB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 6:14 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff, Sioux	26 min
Jul 26, 6:37 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	38 min
Jul 26, 6:53 PM MDT	Tornado Warning	CYS	Dawes	15 min
Jul 26, 7:14 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	31 min
Jul 26, 7:36 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes	39 min
Jul 26, 8:15 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte	27 min
Jul 26, 8:22 PM MDT	Special Weather Statement	CYS	Sioux	38 min
Jul 26, 9:30 PM MDT	Special Weather Statement	CYS	Box Butte	45 min
Jul 27, 2:06 AM MDT	Special Weather Statement	CYS	Dawes	39 min
Jul 27, 8:31 AM MDT	Special Weather Statement	CYS	Cheyenne	29 min
Jul 27, 2:49 PM MDT	Special Weather Statement	CYS	Dawes	41 min
Jul 27, 5:06 PM MDT	Severe Thunderstorm Warning	CYS	Kimball	24 min
Jul 27, 5:24 PM MDT	Severe Thunderstorm Warning	CYS	Kimball	51 min
Jul 27, 5:32 PM MDT	Flash Flood Warning	CYS	Kimball	3 hr
Jul 27, 5:50 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff, Sioux	40 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.