Alert archive / Nebraska / Tornado Warnings in 2009

Tornado Warning 63, NWS North Platte, NE

July 13, 2009Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 13, 2009, 8:54 PM MDT for Cherry County, Nebraska. It was in force for 51 min. 1 report 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 13, 2009, 8:54 PM MDT (02:54 UTC)
Expired: Jul 13, 2009, 9:45 PM MDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

County Cherry County, NE

The radar

The North Platte radar (KLNX), 69 km from the middle of the area, began a volume at 02:56 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 13, 9:00 PM MDT	TSTM WND DMG	8 Ssw Wood Lake, NE	POWER POLES WERE REPORTED TO HAVE BEEN BROKEN BY THUNDERSTORM WIND GUSTS. LOCATION 8 MILES SOUTH... SOUTHWEST OF WOOD LAKE IS APPROXIMATE.

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 13, 4:52 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.9 hours before the alert went out and 159 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: 2857 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1339 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 207 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 140254
TORLBF
NEC031-140345-
/O.NEW.KLBF.TO.W.0063.090714T0254Z-090714T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
954 PM CDT MON JUL 13 2009

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 1045 PM CDT

* AT 952 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 13 MILES NORTH
  OF HIGHWAY 83 CROSSING GOOSE CREEK...OR 21 MILES SOUTH OF
  VALENTINE...MOVING SOUTHEAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL EASTERN CHERRY COUNTY AT 1010 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.

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 MIDNIGHT CDT
TUESDAY MORNING FOR WESTERN NEBRASKA.

&&

LAT...LON 4259 10018 4254 10019 4234 10054 4257 10062
      4268 10037
TIME...MOT...LOC 0254Z 317DEG 10KT 4257 10046

$$

SPRINGER

1 follow-up statement

000 
WWUS53 KLBF 140324
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1024 PM CDT MON JUL 13 2009

NEC031-140345-
/O.CON.KLBF.TO.W.0063.000000T0000Z-090714T0345Z/
CHERRY NE-
1024 PM CDT MON JUL 13 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR EAST
CENTRAL CHERRY COUNTY...

AT 1024 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE
A SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS TORNADO WAS LOCATED
11 MILES EAST OF VALENTINE NATIONAL WILDLIFE REFUGE...OR 23 MILES
SOUTH OF VALENTINE...MOVING SOUTHEAST AT 10 MPH.

THE TORNADO WILL BE NEAR...
  RURAL EASTERN CHERRY COUNTY AT 1040 PM CDT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4259 10018 4254 10019 4234 10054 4257 10062
      4268 10037
TIME...MOT...LOC 0324Z 299DEG 8KT 4257 10039

$$

SPRINGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 6:30 PM MDT	Tornado Warning	LBF	Cherry	60 min
Jul 13, 6:34 PM MDT	Severe Thunderstorm Warning	LBF	Garden	41 min
Jul 13, 6:39 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	66 min
Jul 13, 7:07 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Keith	38 min
Jul 13, 7:13 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	47 min
Jul 13, 7:15 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant, Keith	45 min
Jul 13, 7:24 PM MDT	Tornado Warning	LBF	Cherry	51 min
Jul 13, 8:01 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	44 min
Jul 13, 8:02 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	26 min
Jul 13, 8:14 PM MDT	Tornado Warning	LBF	Cherry	46 min
Jul 13, 8:44 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry	29 min
Jul 13, 9:43 PM MDT	Tornado Warning	LBF	Cherry	32 min
Jul 13, 10:35 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	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.