Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 93, NWS North Platte, NE

September 29, 2007Keya Paha County, Nebraska

NWS North Platte, NE issued this tornado warning at Sep 29, 2007, 9:10 PM CDT for Keya Paha County, Nebraska. It was in force for 35 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
Sep 29, 2007, 9:10 PM CDT (02:10 UTC)
Expired
Sep 29, 2007, 9:45 PM CDT
In force
35 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

County Keya Paha County, NE

The radar

The North Platte radar (KLNX), 124 km from the middle of the area, began a volume at 02:12 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
Sep 29, 6:04 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.2 hours before the alert went out and 208 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, N. Platte/Lee Bi, NE at 00:00Z on 2007-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2348 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2007-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 square meters per square second.1939587897117Sfc1 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
2348 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1804 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
1.1
Supercell composite
22.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 300210
TORLBF
NEC103-300245-
/O.NEW.KLBF.TO.W.0093.070930T0210Z-070930T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
910 PM CDT SAT SEP 29 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA...
  THIS INCLUDES THE CITY OF SPRINGVIEW...

* UNTIL 945 PM CDT.

* AT 907 PM CDT...A TORNADO WAS REPORTED 12 MILES WEST OF
  SPRINGVIEW...MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  7 MILES NORTHWEST OF SPRINGVIEW BY 920 PM CDT...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY
MORNING FOR WESTERN NEBRASKA.

LAT...LON 4300 9953 4276 9977 4279 10001 4297 10009
TIME...MOT...LOC 0210Z 246DEG 33KT 4287 9994

$$

SPRINGER
2 follow-up statements
000 
WWUS53 KLBF 300226
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
926 PM CDT SAT SEP 29 2007

NEC103-300245-
/O.CON.KLBF.TO.W.0093.000000T0000Z-070930T0245Z/
KEYA PAHA NE-
926 PM CDT SAT SEP 29 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR WESTERN
KEYA PAHA COUNTY...

AT 922 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS TORNADO WAS LOCATED
NEAR HIGHWAY 183 MILE MARKER 220...OR ABOUT 7 MILES NORTHWEST OF
SPRINGVIEW...MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  RURAL NORTHERN KEYA PAHA COUNTY AT 940 PM CDT

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY
MORNING FOR WESTERN NEBRASKA.

LAT...LON 4300 9953 4276 9977 4279 10001 4297 10009
TIME...MOT...LOC 0226Z 246DEG 33KT 4293 9976

$$

SPRINGER
000 
WWUS53 KLBF 300243
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
943 PM CDT SAT SEP 29 2007

NEC103-300253-
/O.EXP.KLBF.TO.W.0093.000000T0000Z-070930T0245Z/
KEYA PAHA NE-
943 PM CDT SAT SEP 29 2007

...THE TORNADO WARNING FOR WESTERN KEYA PAHA COUNTY EXPIRES AT 945 PM
CDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY
MORNING FOR WESTERN NEBRASKA...AND STRONG THUNDERSTORMS ARE POSSIBLE 
THROUGH LATE TONIGHT.

LAT...LON 4300 9953 4276 9977 4279 10001 4297 10009
TIME...MOT...LOC 0243Z 246DEG 33KT 4299 9956

$$

SPRINGER

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 29, 7:05 PM CDTSevere Thunderstorm WarningLBFCherry40 min
Sep 29, 7:21 PM CDTSevere Thunderstorm WarningLBFGarden, Grant24 min
Sep 29, 7:26 PM CDTSevere Thunderstorm WarningLBFLincoln, Logan49 min
Sep 29, 7:31 PM CDTSevere Thunderstorm WarningLBFCherry29 min
Sep 29, 7:38 PM CDTSevere Thunderstorm WarningLBFCherry52 min
Sep 29, 7:49 PM CDTSevere Thunderstorm WarningLBFCherry, Sheridan41 min
Sep 29, 8:28 PM CDTSevere Thunderstorm WarningLBFArthur, Grant, Hooker47 min
Sep 29, 8:28 PM CDTSevere Thunderstorm WarningLBFCherry32 min
Sep 29, 8:30 PM CDTSevere Thunderstorm WarningLBFCherry, Keya Paha45 min
Sep 29, 8:38 PM CDTSevere Thunderstorm WarningLBFCherry52 min
Sep 29, 9:13 PM CDTSevere Thunderstorm WarningLBFChase, Frontier, Hayes, Lincoln47 min
Sep 29, 9:15 PM CDTSevere Thunderstorm WarningLBFCherry, Hooker, Thomas45 min
Sep 29, 9:16 PM CDTSevere Thunderstorm WarningLBFArthur, Keith, Lincoln, McPherson, Perkins44 min
Sep 29, 9:58 PM CDTSevere Thunderstorm WarningLBFCuster, Lincoln, Logan62 min
Sep 29, 10:00 PM CDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha, Thomas30 min
Sep 29, 10:30 PM CDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha, Rock30 min
Sep 29, 10:35 PM CDTSevere Thunderstorm WarningLBFFrontier25 min
Sep 29, 10:56 PM CDTSevere Thunderstorm WarningLBFCuster49 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.