Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 5, NWS Cheyenne, WY

June 17, 2007Cheyenne County, Kimball County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jun 17, 2007, 5:15 PM MDT for Cheyenne County, Kimball County, Nebraska. It was in force for 33 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
Jun 17, 2007, 5:15 PM MDT (23:15 UTC)
Expired
Jun 17, 2007, 5:48 PM MDT
In force
33 min
Issued by
NWS Cheyenne, WY
Area
Counties, with a storm outline in the text

Counties Cheyenne County, NE, Kimball County, NE

The radar

The Cheyenne radar (KCYS), 117 km from the middle of the area, began a volume at 23:14 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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 17, 3:01 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.3 hours before the alert went out and 154 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2007-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2007-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
7 J/kg
Mixed-layer CIN
-411 J/kg
Mixed-layer LCL
3371 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS55 KCYS 172317
TORCYS
NEC033-105-172345-
/O.NEW.KCYS.TO.W.0005.070617T2315Z-070617T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
515 PM MDT SUN JUN 17 2007

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA...
  EASTERN KIMBALL COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 545 PM MDT

* AT 510 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 13 MILES NORTH
  OF POTTER...OR ABOUT 22 MILES NORTHWEST OF SIDNEY...MOVING
  NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM AND POSSIBLE TORNADO WILL OTHERWISE REMAIN 
  OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY.

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

THIS WARNING REPLACES THE PREVIOUSLY ISSUED SEVERE THUNDERSTORM
WARNING FOR SOUTHEAST BANNER...EASTERN KIMBALL...SOUTHWEST MORRILL
AND NORTHWEST CHEYENNE COUNTIES. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
SUNDAY EVENING FOR CENTRAL NEBRASKA.

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

LAT...LON 4138 10348 4103 10371 4101 10328 4142 10310

$$

WEILAND
2 follow-up statements
000 
WWUS55 KCYS 172340
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
538 PM MDT SUN JUN 17 2007

NEC033-105-172345-
/O.CON.KCYS.TO.W.0005.000000T0000Z-070617T2345Z/
CHEYENNE NE-KIMBALL NE-
538 PM MDT SUN JUN 17 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR
SOUTHEASTERN KIMBALL AND WESTERN CHEYENNE COUNTIES...

THIS TORNADO WARNING DOES NOT INCLUDE THE CITY OF SIDNEY.

AT 535 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS TORNADO WAS
LOCATED 22 MILES NORTH OF I-80 MM 43...OR ABOUT 25 MILES NORTHWEST OF
SIDNEY...MOVING NORTHEAST AT 30 MPH.  NO REPORTS OF A TORNADO HAVE 
BEEN RECEIVED AT THIS TIME.  

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
SUNDAY EVENING FOR CENTRAL NEBRASKA.

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

LAT...LON 4137 10337 4102 10366 4101 10325 4138 10312

$$

WEILAND
000 
WWUS55 KCYS 172348
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
544 PM MDT SUN JUN 17 2007

NEC033-105-172354-
/O.CAN.KCYS.TO.W.0005.000000T0000Z-070617T2345Z/
CHEYENNE NE-KIMBALL NE-
544 PM MDT SUN JUN 17 2007

...THE TORNADO WARNING FOR SOUTHEASTERN KIMBALL AND WESTERN CHEYENNE
COUNTIES IS CANCELLED...

A LINE OF STRONG THUNDERSTORMS EXTENDED FROM NORTH CENTRAL CHEYENNE
TO THE SOUTHEAST CORNER OF KIMBALL COUNTIES AT 543 PM.  NO FURTHER
INDICATIONS OF A POSSIBLE TORNADO ARE SHOWN ON DOPPLER RADAR...SO 
THE TORNADO WARNING FOR THAT AREA HAS BEEN CANCELLED.  

HOWEVER...THE STORMS WILL LIKELY PRODUCE WIND GUSTS TO 55 MPH...HEAVY
RAIN...HAIL UP TO ONE HALF INCH IN DIAMETER AND DEADLY LIGHTNING AS
THEY MOVE ACROSS THE REMAINDER OF CHEYENNE COUNTY...INCLUDING THE
CITY OF SIDNEY. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
SUNDAY EVENING FOR CENTRAL NEBRASKA.

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

LAT...LON 4137 10337 4102 10366 4101 10325 4138 10312

$$

WEILAND

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 3:18 PM MDTSevere Thunderstorm WarningCYSBox Butte20 min
Jun 17, 4:57 PM MDTSevere Thunderstorm WarningCYSBanner, Cheyenne, Kimball, Morrill26 min

Nearby

Tornado Warnings in Nebraska, 2007Every tornado warning in 2007Tornadoes in 2007

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.