Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 89, NWS North Platte, NE

August 13, 2007Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 13, 2007, 4:06 PM MDT for Cherry County, Nebraska. It was in force for 54 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
Aug 13, 2007, 4:06 PM MDT (22:06 UTC)
Expired
Aug 13, 2007, 5:00 PM MDT
In force
54 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

County Cherry County, NE

The radar

The North Platte radar (KLNX), 60 km from the middle of the area, began a volume at 22:08 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
Aug 13, 4:35 PM MDTTSTM WND GST 3131 S Valentine, NESOME PEA SIZE HAIL
Aug 13, 4:35 PM MDTHAIL 0.8831 S Valentine, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.1 hours before the alert went out and 152 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 2007-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 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 12:00Z on 2007-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
650 J/kg
Mixed-layer CIN
-412 J/kg
Mixed-layer LCL
2086 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
28 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 132206
TORLBF
NEC031-132300-
/O.NEW.KLBF.TO.W.0089.070813T2206Z-070813T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
506 PM CDT MON AUG 13 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 600 PM CDT

* AT 504 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR VALENTINE
  NATIONAL WILDLIFE REFUGE...OR ABOUT 24 MILES SOUTH OF VALENTINE...
  MOVING SOUTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  HIGHWAY 83 CROSSING GOOSE CREEK BY 530 PM CDT...

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 1000 PM CDT
MONDAY EVENING FOR NORTHWESTERN NEBRASKA.

LAT...LON 4265 10063 4238 10074 4218 10021 4259 10021

$$

13
2 follow-up statements
000 
WWUS53 KLBF 132232
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
532 PM CDT MON AUG 13 2007

NEC031-132300-
/O.CON.KLBF.TO.W.0089.000000T0000Z-070813T2300Z/
CHERRY NE-
532 PM CDT MON AUG 13 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR EAST
CENTRAL CHERRY COUNTY...

AT 531 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HIGHWAY 83
CROSSING GOOSE CREEK...OR ABOUT 31 MILES SOUTH OF VALENTINE...MOVING
SOUTH AT 15 MPH.

THE TORNADO WILL BE NEAR...
  RURAL EASTERN CHERRY COUNTY AT 550 PM CDT

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT 
MONDAY EVENING FOR NORTHWESTERN NEBRASKA.

LAT...LON 4265 10063 4238 10074 4218 10021 4259 10021

$$

13
000 
WWUS53 KLBF 132300
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
559 PM CDT MON AUG 13 2007

NEC031-132309-
/O.EXP.KLBF.TO.W.0089.000000T0000Z-070813T2300Z/
CHERRY NE-
559 PM CDT MON AUG 13 2007

...THE TORNADO WARNING FOR EAST CENTRAL CHERRY COUNTY EXPIRES AT 600
PM CDT...

THE STORM WHICH HAD PROMPTED THE WARNING HAS SHOWN SIGNS OF 
WEAKENING AND THE WARNING WILL BE ALLOWED TO EXPIRE. WIND GUSTS TO 
45 MPH...DIME SIZE HAIL AND HEAVY RAINFALL CAN STILL BE EXPECTED 
ACROSS SOUTHEAST CHERRY COUNTY OVER THE NEXT HOURS AS THIS STORM 
CONTINUES TO MOVE SOUTHWARD AT AROUND 20 MPH. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR NORTHWESTERN NEBRASKA.

LAT...LON 4265 10063 4238 10074 4218 10021 4259 10021

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 3:59 AM MDTRed Flag WarningLBFArthur, Blaine, Boyd, Brown, Cherry, Deuel and 12 more17 hr
Aug 13, 3:21 PM MDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha54 min
Aug 13, 3:52 PM MDTSevere Thunderstorm WarningLBFCherry53 min
Aug 13, 4:15 PM MDTSevere Thunderstorm WarningLBFArthur, Garden, Grant60 min
Aug 13, 4:58 PM MDTSevere Thunderstorm WarningLBFBoyd, Keya Paha51 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.