Alert archive / Louisiana / Tornado Warnings in 2007

Tornado Warning 18, NWS Lake Charles, LA

December 28, 2007Iberia Parish, Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Dec 28, 2007, 9:35 AM CST for Iberia Parish, Vermilion Parish, Louisiana. It was in force for 25 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: Dec 28, 2007, 9:35 AM CST (15:35 UTC)
Expired: Dec 28, 2007, 10:00 AM CST
In force: 25 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Iberia Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 134 km from the middle of the area, began a volume at 15:36 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, 3.6 hours before the alert went out and 133 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: 653 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 597 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 363 m²/s²
0-3 km storm-relative helicity: 374 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLCH 281536
TORLCH
LAC045-113-281600-
/O.NEW.KLCH.TO.W.0018.071228T1535Z-071228T1600Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
935 AM CST FRI DEC 28 2007

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN IBERIA PARISH IN SOUTH CENTRAL LOUISIANA...   
   THIS INCLUDES THE CITIES OF...NEW IBERIA...AVERY ISLAND...  
  EXTREME EAST CENTRAL VERMILION PARISH IN SOUTHWEST LOUISIANA...

* UNTIL 1000 AM CST

* AT 931 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTH OF
  ERATH...OR ABOUT 8 MILES SOUTHEAST OF ABBEVILLE...MOVING NORTHEAST
  AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  DELCAMBRE AND AVERY ISLAND BY 940 AM CST...
  NEW IBERIA BY 950 AM CST...

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 3011 9170 3010 9170 3001 9163 2982 9208
      2988 9212 3008 9192 3005 9182 3013 9173
TIME...MOT...LOC 1535Z 234DEG 43KT 2990 9202

$$

SHAMBURGER

2 follow-up statements

000 
WWUS54 KLCH 281549
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
948 AM CST FRI DEC 28 2007

LAC113-281558-
/O.CAN.KLCH.TO.W.0018.000000T0000Z-071228T1600Z/
VERMILION LA-
948 AM CST FRI DEC 28 2007

...THE TORNADO WARNING FOR EXTREME EAST CENTRAL VERMILION PARISH IS
CANCELLED...

LAT...LON 3011 9170 3010 9170 3005 9167 3001 9163
      2987 9196 2991 9195 3005 9182
TIME...MOT...LOC 1548Z 244DEG 37KT 2991 9189

$$

LAC045-281600-
/O.CON.KLCH.TO.W.0018.000000T0000Z-071228T1600Z/
IBERIA LA-
948 AM CST FRI DEC 28 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM CST FOR
NORTHWESTERN IBERIA PARISH...

AT 945 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
POSSIBLE TORNADO WAS LOCATED NEAR AVERY ISLAND...MOVING NORTHEAST AT 
40 MPH.

THE TORNADO WILL BE NEAR...
  NEW IBERIA BY 955 AM CST...
  6 MILES SOUTH OF LOREAUVILLE AND 7 MILES SOUTHWEST OF LAKE FAUSSE
  POINTE BY 1000 AM CST...

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 3011 9170 3010 9170 3005 9167 3001 9163
      2987 9196 2991 9195 3005 9182
TIME...MOT...LOC 1548Z 244DEG 37KT 2991 9189

$$

SHAMBURGER

000 
WWUS54 KLCH 281555
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
954 AM CST FRI DEC 28 2007

LAC045-281604-
/O.EXP.KLCH.TO.W.0018.000000T0000Z-071228T1600Z/
IBERIA LA-
954 AM CST FRI DEC 28 2007

...THE TORNADO WARNING FOR NORTHWESTERN IBERIA PARISH EXPIRES AT 1000
AM CST...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND NO 
LONGER APPEARED CAPABLE OF PRODUCING A TORNADO.  THUS...THE WARNING 
HAS BEEN ALLOWED TO EXPIRE.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY 
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE.  


LAT...LON 3011 9170 3010 9170 3005 9167 3001 9163
      2987 9196 2991 9195 3005 9182
TIME...MOT...LOC 1554Z 244DEG 45KT 2995 9181

$$

SHAMBURGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 4:56 AM CST	Special Marine Warning	LCH		94 min
Dec 28, 8:29 AM CST	Severe Thunderstorm Warning	LCH	Lafayette, Saint Landry, Saint Martin, Vermilion	46 min
Dec 28, 8:31 AM CST	Special Marine Warning	LCH		59 min

Nearby

Tornado Warnings in Louisiana, 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.