Alert archive / Louisiana / Tornado Warnings in 2011

Tornado Warning 65, NWS New Orleans, LA

May 26, 2011Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at May 26, 2011, 4:27 PM CDT for Saint Tammany Parish, Louisiana. It was in force for 33 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: May 26, 2011, 4:27 PM CDT (21:27 UTC)
Expired: May 26, 2011, 5:00 PM CDT
In force: 33 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Saint Tammany Parish, LA

What was reported inside it

Time	Report	Where	Remark
May 26, 4:45 PM CDT	TORNADO 3	3 W Sun, LA	PRELIMINARY RATING OF LOW END EF3. DAMAGE WAS OBSERVED NEAR THE INTERSECTION OF JENKINS CEMETERY ROAD AND LOUISIANA HIGHWAY 40. TWO HOMES HAD EXTENSIVE DAMAGE WITH ENTIRE ROOFS RIPPED OFF AND COLLAPSE OF SOME EXTERIOR WALLS. PRELIMINARY PATH WIDTH OF 150 YARDS
May 26, 4:45 PM CDT	TORNADO 3	5 Wnw Bush, LA	* 4 INJ * FINAL RATING OF EF3 WITH ESTIMATED WINDS OF 140 MPH. DAMAGE BEGAN AT BIRTRUE ROAD EAST OF LA HIGHWAY 40. TORNADO CONTINUED EAST PRODUCING EF2 DAMAGE TO HOMES ON BIRTRUE AND THORNHILL ROADS. EF3 DAMAGE WAS OBSERVED NEAR JENKINS CEMETERY ROAD AND L
May 26, 4:45 PM CDT	TORNADO	8 W Sun, LA	A TORNADO PRODUCED UNKNOWN DAMAGE IN THE VICINITY OF HIGHWAY 40 AND BIRTRUE ROAD. LAW ENFORCEMENT IS INVESTIGATING.

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 12:00Z, 9.5 hours before the alert went out and 50 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: 3259 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 464 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 12.8

Open this sounding in Storm Lab

The text

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

727 
WFUS54 KLIX 262127
TORLIX
LAC103-262200-
/O.NEW.KLIX.TO.W.0065.110526T2127Z-110526T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
427 PM CDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA...

* UNTIL 500 PM CDT

* AT 424 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES WEST OF
  SUN...OR 10 MILES NORTH OF COVINGTON...MOVING EAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUSH

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 3068 9003 3067 9000 3067 8993 3066 8982
      3065 8982 3047 8984 3055 9015 3068 9012
TIME...MOT...LOC 2128Z 282DEG 24KT 3062 9002

$$

2 follow-up statements

267 
WWUS54 KLIX 262135
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
435 PM CDT THU MAY 26 2011

LAC103-262200-
/O.CON.KLIX.TO.W.0065.000000T0000Z-110526T2200Z/
ST. TAMMANY LA-
435 PM CDT THU MAY 26 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTH
CENTRAL ST. TAMMANY PARISH...

AT 433 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES WEST OF SUN...OR
12 MILES NORTHEAST OF COVINGTON...MOVING EAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUSH

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 3068 9003 3067 9000 3067 8993 3066 8982
      3065 8982 3047 8984 3055 9015 3068 9012
TIME...MOT...LOC 2136Z 265DEG 14KT 3063 8999

$$

013 
WWUS54 KLIX 262146
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
446 PM CDT THU MAY 26 2011

LAC103-262200-
/O.CON.KLIX.TO.W.0065.000000T0000Z-110526T2200Z/
ST. TAMMANY LA-
446 PM CDT THU MAY 26 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTH
CENTRAL ST. TAMMANY PARISH...

AT 443 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT A TORNADO.  THIS TORNADO WAS LOCATED ABOUT 3 MILES WEST OF 
SUN...OR 12 MILES SOUTHWEST OF BOGALUSA...MOVING EAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUSH

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 3068 9003 3067 9000 3067 8993 3066 8982
      3065 8982 3047 8984 3055 9015 3068 9012
TIME...MOT...LOC 2145Z 265DEG 13KT 3063 8997

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 1:35 AM CDT	Severe Thunderstorm Warning	LIX	East Feliciana, West Feliciana	55 min
May 26, 1:39 PM CDT	Severe Thunderstorm Warning	LIX	Washington	25 min
May 26, 4:02 PM CDT	Severe Thunderstorm Warning	LIX	Washington	58 min
May 26, 4:18 PM CDT	Severe Thunderstorm Warning	LIX	Washington	57 min
May 26, 4:59 PM CDT	Tornado Warning	LIX	Saint Tammany	15 min
May 26, 5:35 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	25 min
May 26, 5:39 PM CDT	Tornado Warning	LIX	Saint Tammany	36 min
May 26, 5:55 PM CDT	Special Marine Warning	LIX		35 min
May 26, 6:10 PM CDT	Special Marine Warning	LIX		35 min
May 26, 6:16 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Tammany	29 min
May 26, 6:33 PM CDT	Special Marine Warning	LIX		42 min
May 26, 6:58 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Bernard	32 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.