Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 11, NWS North Platte, NE

March 28, 2007Arthur County, Garden County, Nebraska

NWS North Platte, NE issued this tornado warning at Mar 28, 2007, 7:07 PM MDT for Arthur County, Garden County, Nebraska. It was in force for 38 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
Mar 28, 2007, 7:07 PM MDT (01:07 UTC)
Expired
Mar 28, 2007, 7:45 PM MDT
In force
38 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

Counties Arthur County, NE, Garden County, NE

The radar

The North Platte radar (KLNX), 121 km from the middle of the area, began a volume at 01:11 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.1 hours before the alert went out and 121 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 2007-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1774 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 2007-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
1774 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
816 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
2.5
Supercell composite
10.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 290108
TORLBF
NEC005-069-290145-
/O.NEW.KLBF.TO.W.0011.070329T0107Z-070329T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
707 PM MDT WED MAR 28 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME EAST CENTRAL GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...
  WESTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 745 PM MDT

* AT 706 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A TORNADO 8 MILES SOUTH OF BOURQUIM HILL...OR ABOUT 10 MILES       
  SOUTHWEST OF ARTHUR...MOVING NORTH AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  BOURQUIM HILL IN RURAL WESTERN ARTHUR BY 715 PM MDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
LARGE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

LAT...LON 4143 10203 4145 10180 4173 10173 4173 10207

$$

JWS
2 follow-up statements
000 
WWUS53 KLBF 290115
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
814 PM CDT WED MAR 28 2007

NEC005-069-290145-
/O.CON.KLBF.TO.W.0011.000000T0000Z-070329T0145Z/
ARTHUR NE-GARDEN NE-
714 PM MDT WED MAR 28 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR EXTREME
EAST CENTRAL GARDEN AND WESTERN ARTHUR COUNTIES...

AT 711 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR BOURQUIM HILL...OR ABOUT 15 MILES WEST OF
ARTHUR...MOVING NORTH AT 40 MPH.

THE TORNADO WILL BE NEAR...
  8 MILES WEST OF JENSEN LAKE...ALONG THE GARDEN AND ARTHUR COUNTY   
  LINE THROUGH 730 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.

LAT...LON 4143 10203 4145 10180 4173 10173 4173 10207

$$

JWS
000 
WWUS53 KLBF 290147
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
846 PM CDT WED MAR 28 2007

NEC005-069-290156-
/O.EXP.KLBF.TO.W.0011.000000T0000Z-070329T0145Z/
ARTHUR NE-GARDEN NE-
746 PM MDT WED MAR 28 2007

...THE TORNADO WARNING FOR EXTREME EAST CENTRAL GARDEN AND WESTERN
ARTHUR COUNTIES EXPIRED AT 745 PM MDT...

AT 745 PM MDT...NORTH PLATTE DOPPLER RADAR INDICATED THAT THE STORM 
THAT PROMPTED THE WARNING HAD MOVED OUT OF THE AREA. 
HOWEVER...ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE IN THE AREA 
THROUGH 9 PM MDT.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO 
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY 
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4143 10203 4145 10180 4173 10173 4173 10207

$$

JWS

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 28, 6:00 PM MDTSevere Thunderstorm WarningLBFChase30 min
Mar 28, 6:10 PM MDTTornado WarningLBFCherry35 min
Mar 28, 6:25 PM MDTSevere Thunderstorm WarningLBFChase50 min
Mar 28, 6:26 PM MDTSevere Thunderstorm WarningLBFArthur, Keith49 min
Mar 28, 6:41 PM MDTTornado WarningLBFArthur, Keith49 min
Mar 28, 6:47 PM MDTTornado WarningLBFCherry28 min
Mar 28, 6:53 PM MDTTornado WarningLBFChase, Perkins52 min
Mar 28, 7:26 PM MDTTornado WarningLBFGrant34 min
Mar 28, 7:43 PM MDTTornado WarningLBFKeith, Perkins47 min
Mar 28, 8:20 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan40 min
Mar 28, 8:23 PM MDTSevere Thunderstorm WarningLBFKeith, Lincoln, Perkins52 min
Mar 28, 8:26 PM MDTTornado WarningLBFKeith18 min
Mar 28, 8:52 PM MDTSevere Thunderstorm WarningLBFArthur, Keith, McPherson38 min
Mar 28, 8:56 PM MDTSevere Thunderstorm WarningLBFHayes49 min
Mar 28, 10:18 PM MDTFlash Flood WarningLBFChase, Hayes, Keith, Perkins6 hr

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.