Alert archive / Nebraska / Tornado Warnings in 2009

Tornado Warning 49, NWS North Platte, NE

June 24, 2009Boyd County, Keya Paha County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 24, 2009, 10:24 PM CDT for Boyd County, Keya Paha County, Nebraska. It was in force for 36 min. 3 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: Jun 24, 2009, 10:24 PM CDT (03:24 UTC)
Expired: Jun 24, 2009, 11:00 PM CDT
In force: 36 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Boyd County, NE, Keya Paha County, NE

The radar

The North Platte radar (KLNX), 139 km from the middle of the area, began a volume at 03:27 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
Jun 24, 10:40 PM CDT	TSTM WND GST 60	6 Ne Burton, NE	THUNDERSTORM WIND GUSTS REPORTED 6 MILES NORTHEAST OF BURTON. POWER OUTAGE BEGAN AT 1040 PM CDT. TORRENTIAL RAIN ALSO REPORTED ALONG WITH HAIL TO 3/4 INCH IN DIAMETER.
Jun 24, 10:55 PM CDT	HAIL 0.75	6 Ne Burton, NE	HAIL FROM 1/2 TO 3/4 INCH IN DIAMETER REPORTED.
Jun 24, 11:01 PM CDT	TSTM WND GST 70	3 E Burton, NE	REPORTED BY PUBLIC AND RELAYED BY KEYA PAHA COUNTY DISPATCHER.

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 00:00Z, 3.4 hours before the alert went out and 215 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: 1379 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 2029 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 250324
TORLBF
NEC015-103-250400-
/O.NEW.KLBF.TO.W.0049.090625T0324Z-090625T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1024 PM CDT WED JUN 24 2009

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BOYD COUNTY IN NORTH CENTRAL NEBRASKA...
  EASTERN KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 1100 PM CDT

* AT 1023 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES NORTH OF
  BURTON...OR 14 MILES NORTH OF SPRINGVIEW...MOVING SOUTHEAST AT 40
  MPH.

* THE TORNADO WILL BE NEAR...
  BURTON BY 1035 PM CDT...
  MILLS BY 1040 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

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 4289 9901 4283 9916 4277 9936 4276 9943
      4275 9945 4271 9952 4273 9969 4300 9981
      4300 9916
TIME...MOT...LOC 0325Z 317DEG 33KT 4300 9963

$$

SPRINGER

1 follow-up statement

000 
WWUS53 KLBF 250345
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1045 PM CDT WED JUN 24 2009

NEC015-103-250400-
/O.CON.KLBF.TO.W.0049.000000T0000Z-090625T0400Z/
BOYD NE-KEYA PAHA NE-
1045 PM CDT WED JUN 24 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR EASTERN
KEYA PAHA AND NORTHWESTERN BOYD COUNTIES...

AT 1042 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR MILLS...OR 16
MILES EAST OF SPRINGVIEW...MOVING SOUTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  HIGHWAY 137 MILE MARKER 20 BY 1050 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

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 4289 9901 4283 9916 4277 9936 4276 9943
      4275 9945 4271 9952 4273 9969 4300 9981
      4300 9916
TIME...MOT...LOC 0345Z 326DEG 29KT 4289 9944

$$

SPRINGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 10:57 PM CDT	Tornado Warning	LBF	Keya Paha, Rock	33 min
Jun 24, 10:59 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	46 min
Jun 24, 11:30 PM CDT	Tornado Warning	LBF	Keya Paha, Rock	30 min
Jun 24, 11:43 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Rock	47 min
Jun 24, 11:54 PM CDT	Tornado Warning	LBF	Holt, Rock	36 min
Jun 25, 12:24 AM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	54 min
Jun 25, 12:42 AM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	63 min

Nearby

Tornado Warnings in Nebraska, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.