Alert archive / Louisiana / Tornado Warnings in 2005

Tornado Warning 46, NWS New Orleans, LA

April 11, 2005Tangipahoa Parish, Washington Parish, Louisiana; Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Apr 11, 2005, 6:19 PM CDT for Tangipahoa Parish, Washington Parish, Louisiana; Walthall County, Mississippi. It was in force for 41 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: Apr 11, 2005, 6:19 PM CDT (23:19 UTC)
Expired: Apr 11, 2005, 7:00 PM CDT
In force: 41 min
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

Counties Tangipahoa Parish, LA, Washington Parish, LA, Walthall County, MS

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 11, 2:05 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.3 hours before the alert went out and 94 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: 46 J/kg
Mixed-layer CIN: -604 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 273 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 112319
TORLIX
LAC105-117-MSC147-120000-
/O.NEW.KLIX.TO.W.0046.050411T2319Z-050412T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
619 PM CDT MON APR 11 2005

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  TANGIPAHOA PARISH IN SOUTHEAST LOUISIANA
  WASHINGTON PARISH IN SOUTHEAST LOUISIANA
  WALTHALL COUNTY IN SOUTHERN MISSISSIPPI

* UNTIL 700 PM CDT

* AT 615 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MOUNT
  HERMAN...OR ABOUT 16 MILES NORTHWEST OF FRANKLINTON...MOVING
  NORTHEAST AT 55 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  TYLERTOWN BY 635 PM CDT
  9 MILES NORTHWEST OF DEXTER BY 640 PM CDT

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
LARGE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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 900 PM CDT MONDAY EVENING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3099 8989 3097 8991 3096 8998 3084 9033
      3100 9047 3100 9026 3101 9025 3111 9025
      3119 9006

$$

1 follow-up statement

000 
WWUS54 KLIX 112347
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
646 PM CDT MON APR 11 2005

LAC105-117-MSC147-120000-
/O.CON.KLIX.TO.W.0046.000000T0000Z-050412T0000Z/
WASHINGTON LA-WALTHALL MS-TANGIPAHOA LA-
646 PM CDT MON APR 11 2005

...A TORNADO WARNING CONTINUES UNTIL 700 PM CDT FOR WALTHALL
COUNTY...AND TANGIPAHOA AND WASHINGTON PARISHES...

AT 641 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS TORNADO WAS LOCATED
NEAR TYLERTOWN...OR ABOUT 16 MILES NORTH OF FRANKLINTON...MOVING
NORTHEAST AT 55 MPH.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE 
HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY 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 3099 8989 3097 8991 3096 8998 3084 9033
      3100 9047 3100 9026 3101 9025 3111 9025
      3119 9006

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 2:30 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Iberville, Pointe Coupee, West Baton Rouge	30 min
Apr 11, 3:00 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston	30 min
Apr 11, 3:11 PM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	34 min
Apr 11, 6:00 PM CDT	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa	45 min
Apr 11, 6:06 PM CDT	Special Marine Warning	LIX		54 min
Apr 11, 6:14 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche	46 min
Apr 11, 6:25 PM CDT	Severe Thunderstorm Warning	LIX	Terrebonne	65 min
Apr 11, 6:54 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	36 min
Apr 11, 5:19 PM CDT	Tornado Warning	LIX	Amite, Pike	41 min
Apr 11, 6:10 PM CDT	Tornado Warning	LIX	Pike, Walthall	35 min
Apr 11, 6:59 PM CDT	Tornado Warning	LIX	Walthall	16 min

Nearby

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