Alert archive / Louisiana / Tornado Warnings in 2005

Tornado Warning 113, NWS New Orleans, LA

September 23, 2005Lafourche Parish, Saint James Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Sep 23, 2005, 3:33 PM CDT for Lafourche Parish, Saint James Parish, Louisiana. It was in force for 27 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
Sep 23, 2005, 3:33 PM CDT (20:33 UTC)
Expired
Sep 23, 2005, 4:00 PM CDT
In force
27 min
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

Counties Lafourche Parish, LA, Saint James Parish, LA

The watch it was issued in

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

IssuedProductOfficeLasted
Sep 23, 9:55 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.6 hours before the alert went out and 110 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2005-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 377 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2005-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 268 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
377 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
268 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 232033
TORLIX
LAC057-093-232100-
/O.NEW.KLIX.TO.W.0113.050923T2033Z-050923T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
333 PM CDT FRI SEP 23 2005

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  LAFOURCHE PARISH IN SOUTHEAST LOUISIANA
  ST. JAMES PARISH IN SOUTHEAST LOUISIANA

* UNTIL 400 PM CDT

* AT 328 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MATHEWS...
  OR ABOUT 15 MILES NORTHEAST OF HOUMA...MOVING NORTHWEST AT 50 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  CONVENT BY 355 PM CDT

SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR
HALLWAY OR ROOM SUCH AS A CLOSET. 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 TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CDT FRIDAY EVENING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 2985 9090 2987 9090 2989 9087 2994 9087
      2999 9092 3005 9087 2994 9067 2989 9065
      2989 9059 2980 9046 2966 9056

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 23, 9:52 AM CDTFlash Flood WarningLIXOrleans, Saint Bernard6 hr
Sep 23, 10:00 AM CDTTornado WarningLIXAscension, Saint Charles, Saint James, Saint John the Baptist30 min
Sep 23, 10:34 AM CDTTornado WarningLIXAscension, Iberville, Saint James26 min
Sep 23, 10:39 AM CDTTornado WarningLIXAssumption, Lafourche, Saint James36 min
Sep 23, 10:44 AM CDTTornado WarningLIXSaint Charles, Saint James, Saint John the Baptist31 min
Sep 23, 11:11 AM CDTTornado WarningLIXOrleans19 min
Sep 23, 11:17 AM CDTTornado WarningLIXTerrebonne28 min
Sep 23, 11:54 AM CDTTornado WarningLIXAscension, East Baton Rouge, Iberville, Livingston, Saint John the Baptist36 min
Sep 23, 1:00 PM CDTTornado WarningLIXJefferson, Orleans, Plaquemines, Saint Charles30 min
Sep 23, 1:24 PM CDTTornado WarningLIXEast Baton Rouge, Livingston36 min
Sep 23, 1:26 PM CDTTornado WarningLIXAscension, Livingston34 min
Sep 23, 2:09 PM CDTTornado WarningLIXAssumption, Lafourche, Saint James, Terrebonne36 min
Sep 23, 2:21 PM CDTTornado WarningLIXSaint Tammany24 min
Sep 23, 4:42 PM CDTTornado WarningLIXLivingston, Tangipahoa33 min
Sep 23, 5:14 PM CDTTornado WarningLIXLivingston, Tangipahoa31 min

Nearby

Tornado Warnings in Louisiana, 2005Every tornado warning in 2005Tornadoes in 2005

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.