Alert archive / Nebraska / Tornado Warnings in 2008

Tornado Warning 28, NWS Cheyenne, WY

June 17, 2008Dawes County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jun 17, 2008, 6:58 PM MDT for Dawes County, Nebraska. It was in force for 32 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: Jun 17, 2008, 6:58 PM MDT (00:58 UTC)
Expired: Jun 17, 2008, 7:30 PM MDT
In force: 32 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon

County Dawes County, NE

The radar

The Rapid City radar (KUDX), 145 km from the middle of the area, began a volume at 00:59 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
Jun 17, 7:07 PM MDT	FUNNEL CLOUD	5 N Chadron, NE
Jun 17, 7:13 PM MDT	HAIL 1	3 Ne Chadron, NE	1/4 TO 1/2 INCH
Jun 17, 7:25 PM MDT	HAIL 1	11 E Chadron, 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
Jun 17, 3:50 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 1.0 hours before the alert went out and 138 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: 1685 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1004 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -173 m²/s²
0-3 km storm-relative helicity: -123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -4.2

Open this sounding in Storm Lab

The text

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

000 
WFUS55 KCYS 180058
TORCYS
NEC045-180130-
/O.NEW.KCYS.TO.W.0028.080618T0058Z-080618T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
658 PM MDT TUE JUN 17 2008

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

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

* UNTIL 730 PM MDT

* AT 655 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES NORTH OF
  ISINGLASS BUTTES...OR 14 MILES NORTH OF CHADRON...MOVING SOUTHEAST
  AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  DEVILS BACKBONE BY 710 PM...

MOVE INTO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. ABANDON MOBILE HOMES AND VEHICLES.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.

LAT...LON 4259 10279 4300 10307 4301 10305 4301 10279
      4297 10275 4294 10276 4278 10277 4277 10275
      4259 10277
TIME...MOT...LOC 0058Z 330DEG 60KT 4298 10291

$$

DAUGHERTY

2 follow-up statements

000 
WWUS55 KCYS 180116
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
715 PM MDT TUE JUN 17 2008

NEC045-180130-
/O.CON.KCYS.TO.W.0028.000000T0000Z-080618T0130Z/
DAWES NE-
715 PM MDT TUE JUN 17 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
NORTHEASTERN DAWES COUNTY...

AT 713 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS STORM
WAS LOCATED NEAR DEVILS BACKBONE...OR 10 MILES EAST OF 
CHADRON...MOVING SOUTHEAST AT 30 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM TUESDAY
EVENING FOR CENTRAL NEBRASKA.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.

LAT...LON 4259 10277 4259 10279 4300 10307 4301 10305
      4301 10279 4298 10276 4278 10277 4273 10276
TIME...MOT...LOC 0115Z 330DEG 60KT 4284 10279

$$

DAUGHERTY

000 
WWUS55 KCYS 180132
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
732 PM MDT TUE JUN 17 2008

NEC045-180142-
/O.EXP.KCYS.TO.W.0028.000000T0000Z-080618T0130Z/
DAWES NE-
732 PM MDT TUE JUN 17 2008

...THE TORNADO WARNING FOR NORTHEASTERN DAWES COUNTY HAS EXPIRED...

THE STORM HAS EXITED THE WARNED AREA. THEREFORE...THE WARNING WILL BE
ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM TUESDAY
EVENING FOR CENTRAL NEBRASKA.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.

LAT...LON 4259 10277 4259 10279 4300 10307 4301 10305
      4301 10279 4298 10276 4278 10277 4273 10276
TIME...MOT...LOC 0116Z 330DEG 60KT 4282 10278

$$
DAUGHERTY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:31 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes	32 min

Nearby

Tornado Warnings in Nebraska, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.