Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 15, NWS North Platte, NE

April 2, 2007Keith County, Nebraska

NWS North Platte, NE issued this tornado warning at Apr 2, 2007, 5:42 PM MDT for Keith County, Nebraska. It was in force for 33 min. 2 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
Apr 2, 2007, 5:42 PM MDT (23:42 UTC)
Expired
Apr 2, 2007, 6:15 PM MDT
In force
33 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

County Keith County, NE

The radar

The North Platte radar (KLNX), 122 km from the middle of the area, began a volume at 23:46 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

TimeReportWhereRemark
Apr 2, 5:45 PM MDTTSTM WND GST 946 N Ogallala, NE94 MPH WIND GUST AND QUARTER OF AN INCH OF MUSHY HAIL AT ARTHUR BAY...NORTH SIDE OF LAKE MCCONAUGHY.
Apr 2, 6:12 PM MDTTSTM WND GST 70Paxton, 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.

IssuedProductOfficeLasted
Apr 2, 4:28 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.7 hours before the alert went out and 92 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 12:00Z on 2007-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2007-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1690 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
269 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 
WFUS53 KLBF 022342
TORLBF
NEC101-030015-
/O.NEW.KLBF.TO.W.0015.070402T2342Z-070403T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
542 PM MDT MON APR 2 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  KEITH COUNTY IN SOUTHWEST NEBRASKA...
  THIS INCLUDES THE CITY OF OGALLALA...

* UNTIL 615 PM MDT

* AT 541 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LEMOYNE...
  OR ABOUT 11 MILES NORTHWEST OF OGALLALA...MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  9 MILES NORTH OF OGALLALA BY 550 PM MDT...
  KEYSTONE AND 7 MILES NORTH OF ROSCOE BY 555 PM MDT...
  SARBEN AND PAXTON BY 610 PM MDT...

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 1100 PM MDT
MONDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4137 10197 4107 10189 4105 10128 4133 10131

$$

BUTTLER
2 follow-up statements
000 
WWUS53 KLBF 030001
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
700 PM CDT MON APR 2 2007

NEC101-030015-
/O.CON.KLBF.TO.W.0015.000000T0000Z-070403T0015Z/
KEITH NE-
600 PM MDT MON APR 2 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR KEITH
COUNTY...

AT 556 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR KEYSTONE...OR
ABOUT 9 MILES NORTHEAST OF OGALLALA...MOVING EAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  7 MILES NORTH OF INTERSTATE 80 MILE MARKER 140 BY 610 PM MDT...
  SARBEN AND PAXTON BY 615 PM MDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND STRAIGHT LINE WINDS IN EXCESS OF 60 MPH.

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 1100 PM MDT
MONDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4137 10197 4107 10189 4105 10128 4133 10131

$$

BUTTLER
000 
WWUS53 KLBF 030022
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
721 PM CDT MON APR 2 2007

NEC101-030031-
/O.EXP.KLBF.TO.W.0015.000000T0000Z-070403T0015Z/
KEITH NE-
621 PM MDT MON APR 2 2007

...THE TORNADO WARNING FOR KEITH COUNTY EXPIRES AT 615 PM MDT...

THE TORNADO WARNING FOR KEITH COUNTY HAS EXPIRED. A SEVERE 
THUNDERSTORM WARNING HAS BEEN ISSUED FOR EASTERN KEITH AND NORTHERN 
LINCOLN COUNTY UNTIL 815 PM CDT (715 PM MDT).

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT
MONDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4137 10197 4107 10189 4105 10128 4133 10131

$$

BUTTLER

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 3:13 PM MDTSevere Thunderstorm WarningLBFSheridan47 min
Apr 2, 3:54 PM MDTSevere Thunderstorm WarningLBFSheridan21 min
Apr 2, 4:09 PM MDTSevere Thunderstorm WarningLBFCherry66 min
Apr 2, 4:27 PM MDTSevere Thunderstorm WarningLBFGrant63 min
Apr 2, 4:39 PM MDTSevere Thunderstorm WarningLBFDeuel, Garden51 min
Apr 2, 5:23 PM MDTSevere Thunderstorm WarningLBFKeith52 min
Apr 2, 5:46 PM MDTSevere Thunderstorm WarningLBFHooker44 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.