Alert archive / Louisiana / Tornado Warnings in 2011
Tornado Warning 59, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at May 13, 2011, 1:50 PM CDT for Jefferson Parish, Plaquemines Parish, Louisiana. It was in force for 25 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
- May 13, 2011, 1:50 PM CDT (18:50 UTC)
- Expired
- May 13, 2011, 2:15 PM CDT
- In force
- 25 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
Counties Jefferson Parish, LA, Plaquemines Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.8 hours before the alert went out and 80 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.
- Mixed-layer CAPE
- 2741 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 541 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.3
The text
As transmitted, in the capitals the NWS used until 2016.
605 WFUS54 KLIX 131850 TORLIX LAC051-075-131915- /O.NEW.KLIX.TO.W.0059.110513T1850Z-110513T1915Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 150 PM CDT FRI MAY 13 2011 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A * TORNADO WARNING FOR... CENTRAL JEFFERSON PARISH IN SOUTHEAST LOUISIANA... WEST CENTRAL PLAQUEMINES PARISH IN SOUTHEAST LOUISIANA... * UNTIL 215 PM CDT * AT 147 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 11 MILES WEST OF MYRTLE GROVE...OR 14 MILES EAST OF CUT OFF...MOVING EAST AT 30 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO POINTE A LA HACHE PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING PENNY SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. 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 2951 9014 2968 9012 2970 8972 2947 8973 TIME...MOT...LOC 1850Z 271DEG 25KT 2959 9010 $$
1 follow-up statement
070 WWUS54 KLIX 131903 SVSLIX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 203 PM CDT FRI MAY 13 2011 LAC051-075-131915- /O.CON.KLIX.TO.W.0059.000000T0000Z-110513T1915Z/ JEFFERSON LA-PLAQUEMINES LA- 203 PM CDT FRI MAY 13 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR WEST CENTRAL PLAQUEMINES AND CENTRAL JEFFERSON PARISHES... AT 201 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT A TORNADO. THIS TORNADO WAS LOCATED 5 MILES SSW OF MYRTLE GROVE...OR 12 MILES WEST OF POINTE A LA HACHE...MOVING EAST AT 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 2951 9014 2968 9012 2970 8972 2947 8973 TIME...MOT...LOC 1902Z 283DEG 14KT 2958 9001 $$ BANNAN
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 12:12 PM CDT | Special Marine Warning | LIX | 63 min | |
| May 13, 12:29 PM CDT | Special Marine Warning | LIX | 61 min | |
| May 13, 1:04 PM CDT | Special Marine Warning | LIX | 26 min | |
| May 13, 1:13 PM CDT | Special Marine Warning | LIX | 32 min | |
| May 13, 1:28 PM CDT | Tornado Warning | LIX | Jefferson, Lafourche, Plaquemines | 32 min |
| May 13, 1:32 PM CDT | Special Marine Warning | LIX | 28 min | |
| May 13, 2:07 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 53 min |
| May 13, 2:17 PM CDT | Tornado Warning | LIX | Plaquemines | 28 min |
| May 13, 2:33 PM CDT | Tornado Warning | LIX | Plaquemines | 27 min |
| May 13, 2:38 PM CDT | Special Marine Warning | LIX | 82 min | |
| May 13, 3:36 PM CDT | Special Marine Warning | LIX | 54 min | |
| May 13, 3:43 PM CDT | Special Marine Warning | LIX | 92 min |
Nearby
Tornado Warnings in Louisiana, 2011Every tornado warning in 2011Tornadoes 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.