Alert archive / Louisiana / Tornado Warnings in 2011

Tornado Warning 48, NWS New Orleans, LA

April 15, 2011Pointe Coupee Parish, West Feliciana Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 15, 2011, 2:54 PM CDT for Pointe Coupee Parish, West Feliciana Parish, Louisiana. 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: Apr 15, 2011, 2:54 PM CDT (19:54 UTC)
Expired: Apr 15, 2011, 3:30 PM CDT
In force: 36 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties Pointe Coupee Parish, LA, West Feliciana 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
Apr 15, 2:41 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.9 hours before the alert went out and 162 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: 2429 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

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

236 
WFUS54 KLIX 151954
TORLIX
LAC077-125-152030-
/O.NEW.KLIX.TO.W.0048.110415T1954Z-110415T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
254 PM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL POINTE COUPEE PARISH IN SOUTHEAST LOUISIANA...
  WESTERN WEST FELICIANA PARISH IN SOUTHEAST LOUISIANA...

* UNTIL 330 PM CDT

* AT 251 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 12 MILES WEST OF
  BATCHELOR...OR 7 MILES NORTH OF PALMETTO...MOVING EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LETTSWORTH AND MORGANZA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3088 9181 3092 9180 3099 9148 3075 9146
      3072 9174 3074 9175 3078 9176 3082 9181
      3084 9180 3086 9182
TIME...MOT...LOC 1954Z 256DEG 29KT 3082 9184

$$

1 follow-up statement

924 
WWUS54 KLIX 152011
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
311 PM CDT FRI APR 15 2011

LAC077-125-152030-
/O.CON.KLIX.TO.W.0048.000000T0000Z-110415T2030Z/
POINTE COUPEE LA-WEST FELICIANA LA-
311 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR WESTERN
WEST FELICIANA AND CENTRAL POINTE COUPEE PARISHES...

AT 309 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A TORNADO.  THIS TORNADO WAS LOCATED NEAR BATCHELOR...OR 13
MILES NORTHEAST OF MELVILLE...MOVING EAST AT 40 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3088 9181 3092 9180 3099 9148 3075 9146
      3072 9174 3074 9175 3078 9176 3082 9181
      3084 9180 3086 9182
TIME...MOT...LOC 2011Z 257DEG 36KT 3086 9163

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 9:24 PM CDT	Small Craft Advisory	LIX		24 hr
Apr 15, 3:26 PM CDT	Tornado Warning	LIX	East Feliciana, West Feliciana	34 min
Apr 15, 3:45 PM CDT	Tornado Warning	LIX	East Feliciana, Saint Helena	30 min
Apr 15, 3:52 PM CDT	Wind Advisory	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 5 more	6 hr
Apr 15, 3:55 PM CDT	Gale Warning	LIX		6 hr
Apr 15, 4:08 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge	67 min
Apr 15, 4:12 PM CDT	Severe Thunderstorm Warning	LIX	East Feliciana, Saint Helena, Tangipahoa	33 min
Apr 15, 4:56 PM CDT	Tornado Warning	LIX	Tangipahoa, Washington	34 min
Apr 15, 5:01 PM CDT	Tornado Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, Tangipahoa	29 min
Apr 15, 5:22 PM CDT	Tornado Warning	LIX	Washington	23 min
Apr 15, 5:42 PM CDT	Severe Thunderstorm Warning	LIX	Washington	48 min

Nearby

Tornado Warnings in Louisiana, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.