Alert archive / Nebraska / Tornado Warnings in 2008

Tornado Warning 81, NWS North Platte, NE

August 11, 2008Brown County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 11, 2008, 7:09 PM CDT for Brown County, Nebraska. It was in force for 42 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 11, 2008, 7:09 PM CDT (00:09 UTC)
Expired: Aug 11, 2008, 7:51 PM CDT
In force: 42 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

County Brown County, NE

The radar

The North Platte radar (KLNX), 59 km from the middle of the area, began a volume at 00:09 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

Time	Report	Where	Remark
Aug 11, 7:20 PM CDT	HAIL 2.75	20 S Johnstown, NE	GOLF BALL TO BASEBALL OCCURRED IN THE VICINITY OF ENDERS LAKE.
Aug 11, 7:30 PM CDT	TSTM WND GST 60	12 S Johnstown, NE	SHINGLES BLOWN OFF THE HOUSE.

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.

Issued	Product	Office	Lasted
Aug 11, 2:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 140 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1867 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1404 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 266 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 11.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 120009
TORLBF
NEC017-120100-
/O.NEW.KLBF.TO.W.0081.080812T0009Z-080812T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
709 PM CDT MON AUG 11 2008

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL BROWN COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 800 PM CDT

* AT 705 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR MOON LAKE...OR
  19 MILES SOUTHWEST OF AINSWORTH...MOVING SOUTHEAST AT 8 MPH.

* THE TORNADO WILL BE NEAR...
  LONG LAKE STATE WILDLIFE MANAGEMENT AREA BY 745 PM CDT...
  WILLOW LAKE STATE WILDLIFE MANAGEMENT AREA BY 800 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 WESTERN NEBRASKA.

LAT...LON 4227 9986 4214 10004 4233 10018 4234 10017
      4243 10017 4246 10015
TIME...MOT...LOC 0010Z 318DEG 7KT 4237 10013

$$

13

2 follow-up statements

000 
WWUS53 KLBF 120023
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
723 PM CDT MON AUG 11 2008

NEC017-120100-
/O.CON.KLBF.TO.W.0081.000000T0000Z-080812T0100Z/
BROWN NE-
723 PM CDT MON AUG 11 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR WEST
CENTRAL BROWN COUNTY...

AT 718 PM CDT...THE PUBLIC REPORTED A TORNADO.  THIS TORNADO WAS
LOCATED NEAR MOON LAKE...OR 21 MILES SOUTHWEST OF AINSWORTH...MOVING
SOUTH AT 15 MPH.

THE TORNADO WILL BE NEAR...
  LONG LAKE STATE WILDLIFE MANAGEMENT AREA BY 735 PM CDT...
  WILLOW LAKE STATE WILDLIFE MANAGEMENT AREA BY 755 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 WESTERN NEBRASKA.

LAT...LON 4227 9986 4214 10004 4233 10018 4234 10017
      4243 10017 4246 10015
TIME...MOT...LOC 0023Z 341DEG 10KT 4232 10013

$$

13

000 
WWUS53 KLBF 120051
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
751 PM CDT MON AUG 11 2008

NEC017-120100-
/O.CAN.KLBF.TO.W.0081.000000T0000Z-080812T0100Z/
BROWN NE-
750 PM CDT MON AUG 11 2008

...THE TORNADO WARNING FOR WEST CENTRAL BROWN COUNTY IS CANCELLED...

THE STORM WHICH HAD PROMPTED THE WARNING HAS MOVED INTO EXTREME 
SOUTHERN BROWN COUNTY AND WAS NO LONGER SHOWING SIGNS OF LOW LEVEL 
ROTATION. THUNDERSTORMS CONTINUE ACROSS CENTRAL AND SOUTHERN BROWN 
COUNTY...BUT THESE STORMS HAVE BEEN SHOWING SIGNS OF WEAKENING. 

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

LAT...LON 4227 9986 4214 10004 4233 10018 4234 10017
      4243 10017 4246 10015
TIME...MOT...LOC 0050Z 341DEG 10KT 4225 10010

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 7:15 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	45 min
Aug 11, 7:17 PM CDT	Severe Thunderstorm Warning	LBF	Brown	43 min
Aug 11, 7:28 PM CDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	32 min
Aug 11, 7:37 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry	38 min
Aug 11, 8:00 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Hooker, Logan, McPherson, Thomas	45 min
Aug 11, 8:03 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Loup, Rock, Thomas	42 min
Aug 11, 8:14 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Loup	61 min
Aug 11, 8:17 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan, McPherson	43 min
Aug 11, 8:51 PM CDT	Severe Thunderstorm Warning	LBF	Custer	54 min
Aug 11, 9:11 PM CDT	Severe Thunderstorm Warning	LBF	Custer	52 min
Aug 11, 9:38 PM CDT	Severe Thunderstorm Warning	LBF	Custer	37 min
Aug 11, 10:52 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	53 min
Aug 11, 11:18 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	42 min
Aug 11, 11:49 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	26 min
Aug 12, 6:51 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	54 min

Nearby

Tornado Warnings in Nebraska, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.