Alert archive / Nebraska / Tornado Warnings in 2006

Tornado Warning 21, NWS North Platte, NE

August 11, 2006Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 11, 2006, 7:43 PM MDT for Cherry County, Nebraska. It was in force for 32 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: Aug 11, 2006, 7:43 PM MDT (01:43 UTC)
Expired: Aug 11, 2006, 8:15 PM MDT
In force: 32 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), 81 km from the middle of the area, began a volume at 01:44 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.

Issued	Product	Office	Lasted
Aug 11, 1:46 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.7 hours before the alert went out and 173 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: 2404 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1855 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 6.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 120144
TORLBF
NEC031-120215-
/O.NEW.KLBF.TO.W.0021.060812T0143Z-060812T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
843 PM CDT FRI AUG 11 2006

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 915 PM CDT

* AT 838 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BIG ALKALI
  LAKE STATE WILDLIFE MANAGEMENT AREA...OR ABOUT 18 MILES SOUTH OF
  VALENTINE...MOVING SOUTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  HIGHWAY 83 BY 9 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.

LAT...LON 4274 10070 4261 10079 4254 10054 4278 10055

$$

SPRINGER

1 follow-up statement

000 
WWUS53 KLBF 120217
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
916 PM CDT FRI AUG 11 2006

NEC031-120226-
/O.EXP.KLBF.TO.W.0021.000000T0000Z-060812T0215Z/
CHERRY NE-
916 PM CDT FRI AUG 11 2006

...THE TORNADO WARNING FOR EAST CENTRAL CHERRY COUNTY EXPIRED AT 915
PM CDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
FRIDAY EVENING FOR NORTHWESTERN NEBRASKA. A SEVERE THUNDERSTORM WATCH
ALSO REMAINS IN EFFECT UNTIL 1100 PM CDT FRIDAY EVENING FOR NORTH 
CENTRAL NEBRASKA. A SEVERE THUNDERSTORM CONTINUES IN EAST CENTRAL 
CHERRY COUNTY.

LAT...LON 4274 10070 4261 10079 4254 10054 4278 10055

$$

SPRINGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 6:12 PM MDT	Tornado Warning	LBF	Cherry	33 min
Aug 11, 6:37 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry	53 min
Aug 11, 6:57 PM MDT	Severe Thunderstorm Warning	LBF	Keya Paha	63 min
Aug 11, 7:13 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Rock	62 min
Aug 11, 7:28 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	47 min
Aug 11, 8:13 PM MDT	Severe Thunderstorm Warning	LBF	Holt	62 min
Aug 11, 8:16 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	23 min
Aug 12, 1:06 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Grant	39 min

Nearby

Tornado Warnings in Nebraska, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.