Alert archive / Louisiana / Tornado Warnings in 2007

Tornado Warning 3, NWS New Orleans, LA

January 4, 2007Terrebonne Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jan 4, 2007, 6:39 PM CST for Terrebonne Parish, Louisiana. It was in force for 23 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: Jan 4, 2007, 6:39 PM CST (00:39 UTC)
Expired: Jan 4, 2007, 7:02 PM CST
In force: 23 min
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

County Terrebonne Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 4, 1:44 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.7 hours before the alert went out and 138 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: 478 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 547 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 050038
TORLIX
LAC109-050115-
/O.NEW.KLIX.TO.W.0003.070105T0039Z-070105T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
639 PM CST THU JAN 4 2007

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  TERREBONNE PARISH IN SOUTHEAST LOUISIANA

* UNTIL 715 PM CST

* AT 630 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 24 MILES
  SOUTHWEST OF SCHRIEVER...OR ABOUT 21 MILES SOUTHEAST OF MORGAN
  CITY...MOVING NORTHEAST AT 35 MPH.

* THE TORNADO IS WILL BE NEAR...
  SCHRIEVER BY 710 PM CST

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.

GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. 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 2946 9113 2968 9103 2972 9099 2971 9088
      2975 9087 2977 9081 2974 9078 2969 9078
      2941 9094 2939 9097

$$

1 follow-up statement

000 
WWUS54 KLIX 050102
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
702 PM CST THU JAN 4 2007

LAC109-050112-
/O.CAN.KLIX.TO.W.0003.000000T0000Z-070105T0115Z/
TERREBONNE LA-
702 PM CST THU JAN 4 2007

...THE TORNADO WARNING FOR TERREBONNE PARISH IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST THURSDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 2946 9113 2968 9103 2972 9099 2971 9088
      2975 9087 2977 9081 2974 9078 2969 9078
      2941 9094 2939 9097

$$

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 4, 6:58 PM CST	Tornado Warning	LIX	Lafourche	32 min
Jan 4, 9:56 PM CST	Special Marine Warning	LIX		64 min
Jan 4, 10:03 PM CST	Special Marine Warning	LIX		42 min
Jan 4, 10:39 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	36 min
Jan 4, 11:27 PM CST	Special Marine Warning	LIX		33 min
Jan 5, 12:27 AM CST	Special Marine Warning	LIX		63 min
Jan 5, 1:58 AM CST	Special Marine Warning	LIX		2 hr
Jan 5, 5:56 AM CST	Special Marine Warning	LIX		2 hr

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.