Alert archive / Louisiana / Tornado Warnings in 2011
Tornado Warning 40, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Apr 4, 2011, 6:24 PM CDT for Livingston Parish, Tangipahoa Parish, Louisiana. It was in force for 36 min. 3 reports 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 4, 2011, 6:24 PM CDT (23:24 UTC)
- Expired
- Apr 4, 2011, 7:00 PM CDT
- In force
- 36 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
Counties Livingston Parish, LA, Tangipahoa Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 4, 6:30 PM CDT | TSTM WND DMG | 6 Ese Livingston, LA | LARGE TREE SNAPPED ON LOUISIANA HIGHWAY 441. TIME ESTIMATED BASED ON RADAR. |
| Apr 4, 6:35 PM CDT | TSTM WND DMG | 3 Nw Springfield, LA | TREE DOWN ALONG HWY 43 IN HUNGARIAN SETTLEMENT. |
| Apr 4, 6:42 PM CDT | TSTM WND DMG | 2 Sw Hammond, LA | TREES DOWN ALONG I-12 NEAR I-55 INTERCHANGE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 4, 5:28 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 11.4 hours before the alert went out and 84 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
- 1669 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 624 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
865 WFUS54 KLIX 042324 TORLIX LAC063-105-050000- /O.NEW.KLIX.TO.W.0040.110404T2324Z-110405T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 624 PM CDT MON APR 4 2011 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A * TORNADO WARNING FOR... EASTERN LIVINGSTON PARISH IN SOUTHEAST LOUISIANA... CENTRAL TANGIPAHOA PARISH IN SOUTHEAST LOUISIANA... THIS INCLUDES THE CITY OF HAMMOND... * UNTIL 700 PM CDT * AT 622 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTH OF LIVINGSTON...OR 15 MILES EAST OF DENHAM SPRINGS...MOVING NORTHEAST AT 40 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. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. && LAT...LON 3071 9036 3051 9024 3031 9075 3047 9084 TIME...MOT...LOC 2324Z 243DEG 33KT 3043 9070 $$
1 follow-up statement
876 WWUS54 KLIX 042340 SVSLIX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 640 PM CDT MON APR 4 2011 LAC063-105-050000- /O.CON.KLIX.TO.W.0040.000000T0000Z-110405T0000Z/ LIVINGSTON LA-TANGIPAHOA LA- 640 PM CDT MON APR 4 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL TANGIPAHOA AND EASTERN LIVINGSTON PARISHES... AT 636 PM CDT...A TORNADO WAS LOCATED NEAR SPRINGFIELD...OR NEAR HAMMOND...MOVING NORTHEAST AT 40 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PONCHATOULA...TICKFAW...INDEPENDENCE AND ROBERT PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. && LAT...LON 3071 9036 3051 9024 3031 9075 3047 9084 TIME...MOT...LOC 2340Z 243DEG 33KT 3049 9051 $$
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 3:32 PM CDT | Gale Warning | LIX | 15 hr | |
| Apr 4, 3:32 PM CDT | Small Craft Advisory | LIX | 22 hr | |
| Apr 4, 4:31 PM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 74 min |
| Apr 4, 5:36 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge | 54 min |
| Apr 4, 5:45 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Saint Helena, West Baton Rouge | 60 min |
| Apr 4, 6:03 PM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena, Tangipahoa, Washington | 42 min |
| Apr 4, 6:08 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington | 67 min |
| Apr 4, 6:34 PM CDT | Special Marine Warning | LIX | 116 min | |
| Apr 4, 6:34 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, Livingston, Saint Charles, Saint James, Saint John the Baptist and 1 more | 41 min |
| Apr 4, 6:47 PM CDT | Tornado Warning | LIX | Assumption, Lafourche, Saint Charles, Saint James, Saint John the Baptist | 28 min |
| Apr 4, 6:51 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 54 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.