Alert archive / Nebraska / Tornado Warnings in 2016

Tornado Warning 10, NWS Cheyenne, WY

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

NWS Cheyenne, WY issued this tornado warning at Jul 27, 2016, 6:39 PM MDT for Banner County, Scotts Bluff County, Nebraska. It was in force for 10 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 27, 2016, 6:39 PM MDT (00:39 UTC)
Expired: Jul 27, 2016, 6:49 PM MDT
In force: 10 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

The radar

The Cheyenne radar (KCYS), 111 km from the middle of the area, began a volume at 00:41 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.

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.7 hours before the alert went out and 204 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: 278 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 3204 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

181 
WFUS55 KCYS 280039
TORCYS
NEC007-157-280115-
/O.NEW.KCYS.TO.W.0010.160728T0039Z-160728T0115Z/

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

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

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

* UNTIL 715 PM MDT
    
* AT 639 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER WILDCAT HILLS CAMPGROUND...OR 9 MILES
  SOUTH OF SCOTTSBLUFF...MOVING SOUTHEAST AT 30 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...
  HARRISBURG AROUND 700 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.

&&

LAT...LON 4175 10379 4178 10363 4157 10339 4150 10376
TIME...MOT...LOC 0039Z 329DEG 27KT 4173 10370 

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

$$

CLAYCOMB

1 follow-up statement

468 
WWUS55 KCYS 280049
SVSCYS

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

NEC007-157-280059-
/O.CAN.KCYS.TO.W.0010.000000T0000Z-160728T0115Z/
BANNER NE-SCOTTS BLUFF NE-
649 PM MDT WED JUL 27 2016

...THE TORNADO WARNING FOR NORTHEASTERN BANNER AND SOUTH CENTRAL
SCOTTS BLUFF COUNTIES 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.

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

LAT...LON 4175 10379 4178 10363 4157 10339 4150 10376
TIME...MOT...LOC 0048Z 329DEG 27KT 4166 10364 

$$

CLAYCOMB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 6:10 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Kimball	50 min
Jul 27, 6:26 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff	25 min
Jul 27, 6:42 PM MDT	Tornado Warning	CYS	Cheyenne, Kimball	33 min
Jul 27, 7:09 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne	36 min
Jul 27, 9:08 PM MDT	Severe Thunderstorm Warning	CYS	Sioux	37 min
Jul 27, 9:37 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff	38 min
Jul 27, 9:38 PM MDT	Special Weather Statement	CYS	Box Butte	52 min
Jul 27, 10:15 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Kimball	19 min
Jul 27, 10:31 PM MDT	Severe Thunderstorm Warning	CYS	Banner	29 min
Jul 27, 10:36 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Cheyenne, Morrill, Scotts Bluff	21 min
Jul 27, 10:54 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Kimball	39 min
Jul 27, 11:13 PM MDT	Special Weather Statement	CYS	Cheyenne	47 min
Jul 27, 11:30 PM MDT	Severe Thunderstorm Warning	CYS	Kimball	30 min
Jul 28, 3:19 AM MDT	Special Weather Statement	CYS	Sioux	56 min
Jul 28, 4:05 AM MDT	Special Weather Statement	CYS	Sioux	40 min
Jul 28, 4:43 AM MDT	Special Weather Statement	CYS	Box Butte	62 min
Jul 28, 5:30 AM MDT	Special Weather Statement	CYS	Morrill	45 min
Jul 28, 8:53 AM MDT	Special Weather Statement	CYS	Scotts Bluff	37 min
Jul 28, 9:04 AM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill, Scotts Bluff, Sioux	41 min
Jul 28, 9:41 AM MDT	Severe Thunderstorm Warning	CYS	Banner, Cheyenne, Morrill, Scotts Bluff	49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.