Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 2, NWS New Orleans, LA

January 1, 2011Lafourche Parish, Louisiana; Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Jan 1, 2011, 5:19 AM CST for Lafourche Parish, Louisiana; Pike County, Walthall County, Mississippi. It was in force for 63 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jan 1, 2011, 5:19 AM CST (11:19 UTC)
Expired
Mar 5, 2011, 6:30 AM CST
In force
63 days
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

Counties Lafourche Parish, LA, Pike County, MS, Walthall County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 1, 3:10 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.3 hours before the alert went out and 94 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2011-01-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1298 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2011-01-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 329 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1298 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
483 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
329 m²/s²
0-3 km storm-relative helicity
345 m²/s²
Significant tornado parameter
2.2
Supercell composite
11.8

Open this sounding in Storm Lab

The text

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

816 
WFUS54 KLIX 011119
TORLIX
MSC113-147-011215-
/O.NEW.KLIX.TO.W.0002.110101T1119Z-110101T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
519 AM CST SAT JAN 1 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  PIKE COUNTY IN SOUTHERN MISSISSIPPI...
  NORTHWESTERN WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 615 AM CST

* AT 517 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MAGNOLIA...
  OR 11 MILES SOUTH OF MCCOMB...MOVING NORTHEAST AT 45 MPH.

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

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 1000 AM CST SATURDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3134 9007 3135 9004 3134 9003 3125 9003
      3123 9002 3105 9030 3105 9047 3111 9039
      3112 9055 3137 9025 3136 9011
TIME...MOT...LOC 1119Z 235DEG 38KT 3110 9046

$$

CAB
2 follow-up statements
578 
WWUS54 KLIX 011200
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
600 AM CST SAT JAN 1 2011

MSC113-147-011210-
/O.CAN.KLIX.TO.W.0002.000000T0000Z-110101T1215Z/
PIKE MS-WALTHALL MS-
600 AM CST SAT JAN 1 2011

...THE TORNADO WARNING FOR NORTHWESTERN WALTHALL AND PIKE COUNTIES IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AFREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM CST SATURDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3134 9007 3135 9004 3134 9003 3125 9003
      3123 9002 3105 9030 3105 9047 3111 9039
      3112 9055 3137 9025 3136 9011
TIME...MOT...LOC 1200Z 235DEG 38KT 3135 9004

$$

CAB
454 
WFUS54 KLIX 051138
TORLIX
LAC057-051230-
/O.NEW.KLIX.TO.W.0001.110305T1138Z-110305T1230Z/

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LAFOURCHE PARISH IN SOUTHEAST LOUISIANA...
  THIS INCLUDES THE CITIES OF...LAROSE...CUT OFF...

* UNTIL 630 AM CST

* AT 536 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CUT OFF...
  MOVING NORTHEAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  LAROSE BY 545 AM 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.

&&

LAT...LON 2951 9045 2972 9036 2971 9032 2962 9014
      2959 9015 2955 9021 2954 9018 2944 9029
TIME...MOT...LOC 1138Z 206DEG 14KT 2953 9034

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 1, 4:50 AM CSTTornado WarningLIX55 min
Jan 1, 4:50 AM CSTTornado WarningLIXEast Feliciana, Saint Helena70 min
Jan 1, 7:28 AM CSTSpecial Marine WarningLIX62 min
Jan 1, 7:34 AM CSTMarine Dense Fog AdvisoryLIX4 hr
Jan 1, 7:50 AM CSTSpecial Marine WarningLIX25 min
Jan 1, 8:32 AM CSTSpecial Marine WarningLIX88 min
Jan 1, 9:13 AM CSTSpecial Marine WarningLIX92 min
Jan 1, 9:14 AM CSTSpecial Marine WarningLIX91 min
Jan 1, 3:15 PM CSTSmall Craft AdvisoryLIX12 hr

Nearby

Tornado Warnings in Mississippi, 2011Tornado 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.