Alert archive / Louisiana / Tornado Warnings in 2011

Tornado Warning 11, NWS New Orleans, LA

March 5, 2011Saint Bernard Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Mar 5, 2011, 1:58 PM CST for Saint Bernard Parish, Louisiana. It was in force for 17 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: Mar 5, 2011, 1:58 PM CST (19:58 UTC)
Expired: Mar 5, 2011, 2:15 PM CST
In force: 17 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Saint Bernard 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
Mar 5, 8:54 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.0 hours before the alert went out and 38 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: 960 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 451 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

588 
WFUS54 KLIX 051958
TORLIX
LAC087-052015-
/O.NEW.KLIX.TO.W.0011.110305T1958Z-110305T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
158 PM CST SAT MAR 5 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN ST. BERNARD PARISH IN SOUTHEAST LOUISIANA...

* UNTIL 215 PM CST

* AT 156 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  YSCLOSKEY...OR 13 MILES SOUTHEAST OF CHALMETTE...MOVING NORTHEAST
  AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL ST. BERNARD PARISH AT 210 PM CST

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 400 PM CST SATURDAY AFTERNOON
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 2981 8981 2980 8984 2988 8990 2995 8980
      2997 8972 2996 8969 2994 8972 2989 8969
      2989 8961 2990 8959 3001 8958 3003 8952
      3007 8949 2994 8939 2977 8975 2977 8978
TIME...MOT...LOC 1958Z 237DEG 37KT 2986 8975

$$


24/RR

1 follow-up statement

016 
WWUS54 KLIX 052015
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
215 PM CST SAT MAR 5 2011

LAC087-052025-
/O.EXP.KLIX.TO.W.0011.000000T0000Z-110305T2015Z/
ST. BERNARD LA-
215 PM CST SAT MAR 5 2011

...THE TORNADO WARNING FOR WESTERN ST. BERNARD PARISH HAS EXPIRED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CST SATURDAY AFTERNOON
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 2981 8981 2980 8984 2988 8990 2995 8980
      2997 8972 2996 8969 2994 8972 2989 8969
      2989 8961 2990 8959 3001 8958 3003 8952
      3007 8949 2994 8939 2977 8975 2977 8978
TIME...MOT...LOC 1958Z 237DEG 37KT 2986 8975

$$


24/RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 4, 7:31 PM CST	Flash Flood Warning	LIX	Saint Tammany, Tangipahoa	3 hr
Mar 4, 9:00 PM CST	Flash Flood Warning	LIX	Saint Tammany	80 min
Mar 5, 3:05 AM CST	Special Marine Warning	LIX		55 min
Mar 5, 3:49 AM CST	Small Craft Advisory	LIX		32 hr
Mar 5, 5:16 AM CST	River Flood Warning	LIX	Tangipahoa	53 hr
Mar 5, 6:40 AM CST	River Flood Warning	LIX	Saint Tammany	37 hr
Mar 5, 8:58 AM CST	River Flood Warning	LIX	Saint Tammany	50 hr
Mar 5, 9:03 AM CST	River Flood Warning	LIX	Saint Tammany	44 hr
Mar 5, 11:06 AM CST	Severe Thunderstorm Warning	LIX	East Feliciana, Pointe Coupee, West Feliciana	25 min
Mar 5, 11:41 AM CST	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Iberville, Saint James	34 min
Mar 5, 12:00 PM CST	Tornado Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston	30 min
Mar 5, 12:06 PM CST	Special Marine Warning	LIX		114 min
Mar 5, 12:22 PM CST	Tornado Warning	LIX	Assumption, Lafourche, Saint James, Terrebonne	23 min
Mar 5, 12:28 PM CST	Tornado Warning	LIX	Ascension, Livingston, Tangipahoa	32 min
Mar 5, 12:36 PM CST	Special Marine Warning	LIX		84 min
Mar 5, 12:49 PM CST	Tornado Warning	LIX	Lafourche, Saint Charles, Saint James, Saint John the Baptist	26 min
Mar 5, 12:51 PM CST	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Livingston, Orleans, Plaquemines, Saint Bernard and 3 more	54 min
Mar 5, 12:55 PM CST	Tornado Warning	LIX	Jefferson, Lafourche, Saint Charles	35 min
Mar 5, 12:59 PM CST	Tornado Warning	LIX	Livingston, Saint Tammany, Tangipahoa	17 min
Mar 5, 1:15 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa	30 min
Mar 5, 1:26 PM CST	Tornado Warning	LIX	Jefferson, Plaquemines, Saint Bernard	34 min
Mar 5, 1:32 PM CST	Tornado Warning	LIX	Jefferson, Plaquemines, Saint Bernard	28 min
Mar 5, 1:35 PM CST	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	115 min
Mar 5, 1:40 PM CST	Special Marine Warning	LIX		95 min
Mar 5, 1:44 PM CST	Areal Flood Advisory	LIX	Saint Tammany, Washington	2 hr
Mar 5, 1:45 PM CST	Special Marine Warning	LIX		60 min
Mar 5, 2:16 PM CST	Severe Thunderstorm Warning	LIX	Plaquemines	59 min
Mar 5, 2:38 PM CST	Special Marine Warning	LIX		64 min
Mar 5, 3:08 PM CST	Special Marine Warning	LIX		2 hr
Mar 5, 3:22 PM CST	Special Marine Warning	LIX		53 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.