Alert archive / Nebraska / Tornado Warnings in 2009

Tornado Warning 67, NWS North Platte, NE

July 23, 2009Hooker County, McPherson County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 23, 2009, 5:20 PM MDT for Hooker County, McPherson County, Nebraska. It was in force for 55 min. 6 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: Jul 23, 2009, 5:20 PM MDT (23:20 UTC)
Expired: Jul 23, 2009, 6:15 PM MDT
In force: 55 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Hooker County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 42 km from the middle of the area, began a volume at 23:21 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
Jul 23, 5:30 PM MDT	HAIL 1.25	17 Nw Tryon, NE	THE PUBLIC REPORTED HALF DOLLAR SIZE HAIL FROM THE STORM.
Jul 23, 5:31 PM MDT	FUNNEL CLOUD	11 Sw Mullen, NE	THE PUBLIC REPORTED A FUNNEL CLOUD AT APPROXIMATELY 515 PM MDT 11 MILES SOUTHWEST OF MULLEN.
Jul 23, 5:31 PM MDT	HAIL 1	11 Sw Mullen, NE	THE PUBLIC REPORTED QUARTER SIZE HAIL AT 515 PM MDT FROM THE STORM.
Jul 23, 5:33 PM MDT	HAIL 1	20 Sse Mullen, NE	QUARTER SIZE HAIL.
Jul 23, 5:56 PM MDT	HAIL 1.25	18 W Tryon, NE	THE PUBLIC REPORTED HALF DOLLAR SIZE HAIL FROM THE THUNDERSTORM.
Jul 23, 6:17 PM MDT	HAIL 1.75	17 W Tryon, NE	THE PUBLIC REPORTED GOLF BALL SIZE HAIL AND LARGER THAT STRIPPED TREES OF ALL THEIR LEAVES.

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
Jul 23, 2:30 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 77 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: 1035 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 1050 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.2

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 232320
TORLBF
NEC091-117-240015-
/O.NEW.KLBF.TO.W.0067.090723T2320Z-090724T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
620 PM CDT THU JUL 23 2009

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN HOOKER COUNTY IN WEST CENTRAL NEBRASKA...
  MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA...
  THIS INCLUDES THE CITY OF TRYON...

* UNTIL 715 PM CDT/615 PM MDT/

* AT 517 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHWEST OF HIGHWAY 97 CROSSING THE DISMAL RIVER...OR 17 MILES
  SOUTH OF MULLEN...MOVING SOUTH AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  9 MILES EAST OF SCHNICK LAKE BY 710 PM CDT...
  7 MILES WEST OF TRYON BY 715 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLF BALL 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.

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 1100 PM CDT
THURSDAY EVENING/1000 PM MDT THURSDAY EVENING/ FOR WESTERN NEBRASKA.

&&

LAT...LON 4196 10137 4198 10107 4178 10084 4174 10084
      4174 10079 4168 10072 4150 10071 4144 10132
TIME...MOT...LOC 2319Z 349DEG 16KT 4179 10114

$$

KAR

2 follow-up statements

000 
WWUS53 KLBF 232340
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
640 PM CDT THU JUL 23 2009

NEC091-117-240015-
/O.CON.KLBF.TO.W.0067.000000T0000Z-090724T0015Z/
MCPHERSON NE-HOOKER NE-
640 PM CDT THU JUL 23 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT/615 PM MDT/
FOR SOUTHERN HOOKER AND MCPHERSON COUNTIES...

AT 536 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR EAST CODY LAKE...
OR 20 MILES SOUTHWEST OF MULLEN...MOVING SOUTH AT 15 MPH.

THE TORNADO WILL BE NEAR...
  EAST CODY LAKE BY 545 PM MDT...
  8 MILES NORTH OF SCHNICK LAKE BY 715 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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 1100 PM CDT
THURSDAY EVENING/1000 PM MDT THURSDAY EVENING/ FOR WESTERN NEBRASKA.

&&

LAT...LON 4178 10084 4174 10084 4174 10079 4168 10072
      4150 10071 4144 10132 4189 10136 4198 10107
TIME...MOT...LOC 2340Z 006DEG 11KT 4177 10123

$$

KAR

000 
WWUS53 KLBF 232358
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
658 PM CDT THU JUL 23 2009

NEC091-117-240015-
/O.CON.KLBF.TO.W.0067.000000T0000Z-090724T0015Z/
MCPHERSON NE-HOOKER NE-
658 PM CDT THU JUL 23 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT/615 PM MDT/
FOR SOUTHERN HOOKER AND MCPHERSON COUNTIES...

AT 654 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR SCHNICK LAKE...OR
15 MILES WEST OF TRYON...MOVING SOUTH AT 20 MPH.

THE TORNADO WILL BE NEAR...
  9 MILES WEST OF HIGHWAY 92 MILE MARKER 200 BY 710 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
THURSDAY EVENING/1000 PM MDT THURSDAY EVENING/ FOR WESTERN NEBRASKA.

&&

LAT...LON 4178 10084 4174 10084 4174 10079 4168 10072
      4150 10071 4144 10132 4189 10136 4198 10107
TIME...MOT...LOC 2358Z 341DEG 18KT 4156 10122

$$

KAR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 3:39 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	66 min
Jul 23, 4:05 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	55 min
Jul 23, 4:45 PM MDT	Tornado Warning	LBF	Hooker	45 min
Jul 23, 4:59 PM MDT	Severe Thunderstorm Warning	LBF	Chase	46 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.