Alert archive / Texas / Tornado Warnings in 2007

Tornado Warning 15, NWS Lake Charles, LA

October 17, 2007Jasper County, Tyler County, Texas

NWS Lake Charles, LA issued this tornado warning at Oct 17, 2007, 10:54 AM CDT for Jasper County, Tyler County, Texas. It was in force for 36 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: Oct 17, 2007, 10:54 AM CDT (15:54 UTC)
Expired: Oct 17, 2007, 11:30 AM CDT
In force: 36 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Jasper County, TX, Tyler County, TX

The radar

The Lake Charles radar (KLCH), 107 km from the middle of the area, began a volume at 15:56 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.9 hours before the alert went out and 109 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: 1879 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 496 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLCH 171555
TORLCH
TXC241-457-171630-
/O.NEW.KLCH.TO.W.0015.071017T1554Z-071017T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1054 AM CDT WED OCT 17 2007

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL JASPER COUNTY IN SOUTHEAST TEXAS...
  THIS INCLUDES THE CITY OF JASPER...
  EXTREME SOUTHEASTERN TYLER COUNTY IN SOUTHEAST TEXAS...

* UNTIL 1130 AM CDT

* AT 1051 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS
  TRACKING A TORNADO 23 MILES SOUTH OF JASPER...OR ABOUT 8 MILES
  SOUTHWEST OF KIRBYVILLE...MOVING NORTH AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  JASPER BY 1130 AM CDT...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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 3096 9412 3095 9386 3053 9393 3054 9411
TIME...MOT...LOC 1554Z 186DEG 25KT 3061 9400

$$

JS

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 17, 10:37 AM CDT	Tornado Warning	LCH	Hardin, Jasper, Tyler	23 min
Oct 17, 12:32 PM CDT	Lake Wind Advisory	LCH		5 hr
Oct 17, 1:42 PM CDT	Coastal Flood Advisory	LCH		17 hr

Nearby

Tornado Warnings in Texas, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.