Alert archive / Nebraska / Tornado Warnings in 2009

Tornado Warning 66, NWS North Platte, NE

July 23, 2009Hooker County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 23, 2009, 4:45 PM MDT for Hooker County, Nebraska. It was in force for 45 min. 4 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, 4:45 PM MDT (22:45 UTC)
Expired: Jul 23, 2009, 5:30 PM MDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

County Hooker County, NE

The radar

The North Platte radar (KLNX), 36 km from the middle of the area, began a volume at 22:44 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.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 5:11 PM MDT	HAIL 1	9 Sw Mullen, NE	THE PUBLIC REPORTED QUARTER SIZE HAIL FROM THE THUNDERSTORM.
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.

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, 10.8 hours before the alert went out and 91 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 232245
TORLBF
NEC091-232330-
/O.NEW.KLBF.TO.W.0066.090723T2245Z-090723T2330Z/

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN HOOKER COUNTY IN WEST CENTRAL NEBRASKA...
  THIS INCLUDES THE CITY OF MULLEN...

* UNTIL 530 PM MDT

* AT 445 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR HIGHWAY 97
  CROSSING THE DISMAL RIVER...OR 8 MILES SOUTH OF MULLEN...MOVING
  SOUTHEAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  HIGHWAY 97 CROSSING THE DISMAL RIVER BY 505 PM MDT...

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 1000 PM MDT
THURSDAY EVENING FOR WESTERN NEBRASKA.

&&

LAT...LON 4184 10084 4175 10084 4174 10127 4208 10127
      4208 10097
TIME...MOT...LOC 2245Z 330DEG 14KT 4192 10107

$$

KAR

2 follow-up statements

000 
WWUS53 KLBF 232250
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
450 PM MDT THU JUL 23 2009

NEC091-232330-
/O.CON.KLBF.TO.W.0066.000000T0000Z-090723T2330Z/
HOOKER NE-
450 PM MDT THU JUL 23 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR EASTERN
HOOKER COUNTY...

AT 450 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES WEST OF HIGHWAY
97 MILE MARKER 60...OR 9 MILES SOUTHWEST OF MULLEN...MOVING SOUTHEAST
AT 10 MPH.

THE TORNADO WILL BE NEAR...
  HIGHWAY 97 MILE MARKER 60 BY 510 PM MDT...
  HIGHWAY 97 CROSSING THE DISMAL RIVER AND HIGHWAY 97 MILE MARKER 50
  BY 530 PM MDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4184 10084 4175 10084 4174 10127 4208 10127
      4208 10097
TIME...MOT...LOC 2250Z 330DEG 11KT 4196 10117

$$

KAR

000 
WWUS53 KLBF 232312
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
512 PM MDT THU JUL 23 2009

NEC091-232330-
/O.CON.KLBF.TO.W.0066.000000T0000Z-090723T2330Z/
HOOKER NE-
512 PM MDT THU JUL 23 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR EASTERN
HOOKER COUNTY...

AT 508 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 9 MILES WEST OF HIGHWAY
97 CROSSING THE DISMAL RIVER...OR 15 MILES SOUTHWEST OF MULLEN...
MOVING SOUTH AT 25 MPH.

THE TORNADO WILL BE NEAR...
  9 MILES WEST OF HIGHWAY 97 MILE MARKER 50 BY 520 PM MDT...

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 1000 PM MDT
THURSDAY EVENING FOR WESTERN NEBRASKA.

&&

LAT...LON 4184 10084 4175 10084 4174 10127 4208 10127
      4208 10097
TIME...MOT...LOC 2312Z 349DEG 23KT 4185 10121

$$

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, 4:59 PM MDT	Severe Thunderstorm Warning	LBF	Chase	46 min
Jul 23, 5:20 PM MDT	Tornado Warning	LBF	Hooker, McPherson	55 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.