Alert archive / Louisiana / Tornado Warnings in 2012

Tornado Warning 35, NWS New Orleans, LA

April 3, 2012Orleans Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 3, 2012, 11:54 PM CDT for Orleans Parish, Louisiana. It was in force for 15 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 3, 2012, 11:54 PM CDT (04:54 UTC)
Expired: Apr 4, 2012, 12:09 AM CDT
In force: 15 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Orleans Parish, LA

What was reported inside it

Time	Report	Where	Remark
Apr 3, 11:58 PM CDT	TSTM WND DMG	3 Ne New Orleans, LA	ROOF BLOWN OFF OF HOUSE AT GENTILLY AND FRANKLIN AVENUES. SEVERAL HOMES DAMAGED. POSSIBLE TORNADO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.9 hours before the alert went out and 44 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: 2379 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1042 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 70 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.

294 
WFUS54 KLIX 040454
TORLIX
LAC071-040530-
/O.NEW.KLIX.TO.W.0035.120404T0454Z-120404T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1154 PM CDT TUE APR 3 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL ORLEANS PARISH IN SOUTHEAST LOUISIANA...
  THIS INCLUDES THE CITY OF NEW ORLEANS...

* UNTIL 1230 AM CDT

* AT 1153 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER NEW
  ORLEANS. THIS TORNADO WAS NEARLY STATIONARY.

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.

&&

LAT...LON 2995 9006 2994 9006 2998 9011 3005 9005
      3001 8992 2998 8995 2999 8996 2998 8999
      2995 9001 2993 8999 2990 9001
TIME...MOT...LOC 0454Z 304DEG 1KT 2999 9004

$$

2 follow-up statements

487 
WWUS54 KLIX 040503
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1203 AM CDT WED APR 4 2012

LAC071-040530-
/O.CON.KLIX.TO.W.0035.000000T0000Z-120404T0530Z/
ORLEANS LA-
1203 AM CDT WED APR 4 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR WEST
CENTRAL ORLEANS PARISH...

AT 1158 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A TORNADO.  THIS TORNADO WAS LOCATED OVER GENTILLY. THIS 
TORNADO WAS NEARLY STATIONARY.

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.

&&

LAT...LON 2995 9006 2994 9006 2998 9011 3005 9005
      3001 8992 2998 8995 2999 8996 2998 8999
      2995 9001 2993 8999 2990 9001
TIME...MOT...LOC 0503Z 304DEG 1KT 2999 9004

$$

306 
WWUS54 KLIX 040509
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1209 AM CDT WED APR 4 2012

LAC071-040520-
/O.CAN.KLIX.TO.W.0035.000000T0000Z-120404T0530Z/
ORLEANS LA-
1209 AM CDT WED APR 4 2012

...THE TORNADO WARNING FOR WEST CENTRAL ORLEANS PARISH IS
CANCELLED...

LAT...LON 2995 9006 2994 9006 2998 9011 3005 9005
      3001 8992 2998 8995 2999 8996 2998 8999
      2995 9001 2993 8999 2990 9001
TIME...MOT...LOC 0510Z 304DEG 1KT 2999 9004

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:30 PM CDT	Severe Thunderstorm Warning	LIX	Saint Charles, Saint John the Baptist	30 min
Apr 3, 10:05 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson	25 min
Apr 3, 10:06 PM CDT	Special Marine Warning	LIX		24 min
Apr 3, 10:19 PM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	26 min
Apr 3, 10:28 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Saint Bernard	32 min
Apr 3, 10:29 PM CDT	Special Marine Warning	LIX		31 min
Apr 3, 11:01 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Saint Bernard	29 min
Apr 3, 11:43 PM CDT	Areal Flood Advisory	LIX	East Feliciana, Saint Helena, West Feliciana	62 min
Apr 3, 11:44 PM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Saint Bernard	2 hr
Apr 3, 11:46 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa	29 min
Apr 4, 12:10 AM CDT	Flash Flood Warning	LIX	Orleans	3 hr
Apr 4, 12:12 AM CDT	Special Marine Warning	LIX		63 min
Apr 4, 12:28 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	32 min
Apr 4, 12:36 AM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa	24 min
Apr 4, 1:20 AM CDT	Special Marine Warning	LIX		55 min
Apr 4, 1:24 AM CDT	Severe Thunderstorm Warning	LIX	Livingston, Tangipahoa	36 min
Apr 4, 1:27 AM CDT	Special Marine Warning	LIX		33 min
Apr 4, 1:30 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Iberville	30 min
Apr 4, 1:40 AM CDT	Special Marine Warning	LIX		35 min
Apr 4, 2:08 AM CDT	Special Marine Warning	LIX		97 min
Apr 4, 2:17 AM CDT	Areal Flood Advisory	LIX	Pointe Coupee, West Feliciana	118 min
Apr 4, 2:34 AM CDT	Severe Thunderstorm Warning	LIX	Orleans	26 min
Apr 4, 2:40 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Saint Charles	35 min
Apr 4, 2:50 AM CDT	Flash Flood Warning	LIX	Jefferson, Orleans	3 hr
Apr 4, 2:57 AM CDT	Flash Flood Watch	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more	30 hr
Apr 4, 3:18 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Iberville, West Baton Rouge	9 min
Apr 4, 3:53 AM CDT	Special Marine Warning	LIX		67 min
Apr 4, 4:03 AM CDT	Severe Thunderstorm Warning	LIX	Plaquemines, Saint Bernard	42 min
Apr 4, 5:00 AM CDT	Special Marine Warning	LIX		60 min
Apr 4, 5:14 AM CDT	Special Marine Warning	LIX		61 min
Apr 4, 5:25 AM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint John the Baptist	3 hr
Apr 4, 5:30 AM CDT	Special Marine Warning	LIX		60 min
Apr 4, 5:54 AM CDT	Special Marine Warning	LIX		96 min
Apr 4, 6:01 AM CDT	Special Marine Warning	LIX		59 min
Apr 4, 6:27 AM CDT	Special Marine Warning	LIX		93 min
Apr 4, 6:45 AM CDT	Special Marine Warning	LIX		90 min
Apr 4, 6:51 AM CDT	Special Marine Warning	LIX		84 min
Apr 4, 8:05 AM CDT	Special Marine Warning	LIX		115 min
Apr 4, 10:13 AM CDT	Special Marine Warning	LIX		62 min
Apr 4, 11:20 AM CDT	Small Craft Advisory	LIX		3 hr
Apr 4, 11:36 AM CDT	Special Marine Warning	LIX		114 min

Nearby

Tornado Warnings in Louisiana, 2012 Every tornado warning in 2012 Tornadoes in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.