Alert archive / Louisiana / Tornado Warnings in 2012

Tornado Warning 43, NWS New Orleans, LA

June 15, 2012Lafourche Parish, Saint Charles Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jun 15, 2012, 1:55 PM CDT for Lafourche Parish, Saint Charles Parish, Louisiana. It was in force for 20 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
Jun 15, 2012, 1:55 PM CDT (18:55 UTC)
Expired
Jun 15, 2012, 2:15 PM CDT
In force
20 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

Counties Lafourche Parish, LA, Saint Charles Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.9 hours before the alert went out and 86 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 12:00Z on 2012-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 752 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 12:00Z on 2012-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.1939Sfc1 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
752 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
1418 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
-10 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.

777 
WFUS54 KLIX 151855
TORLIX
LAC057-089-151915-
/O.NEW.KLIX.TO.W.0043.120615T1855Z-120615T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
155 PM CDT FRI JUN 15 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LAFOURCHE PARISH IN SOUTHEAST LOUISIANA...
  SOUTHEASTERN ST. CHARLES PARISH IN SOUTHEAST LOUISIANA...

* UNTIL 215 PM CDT

* AT 148 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER ST. CHARLES
  PARISH...OR 10 MILES NORTHEAST OF LAROSE...MOVING WEST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED PARISHES.

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 2956 9046 2977 9051 2980 9023 2973 9021
      2970 9023 2969 9021 2968 9020 2963 9018
TIME...MOT...LOC 1855Z 078DEG 9KT 2970 9031

$$
1 follow-up statement
029 
WWUS54 KLIX 151910
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
210 PM CDT FRI JUN 15 2012

LAC057-089-151920-
/O.EXP.KLIX.TO.W.0043.000000T0000Z-120615T1915Z/
ST. CHARLES LA-LAFOURCHE LA-
210 PM CDT FRI JUN 15 2012

...THE TORNADO WARNING FOR CENTRAL LAFOURCHE AND SOUTHEASTERN ST.
CHARLES PARISHES WILL EXPIRE AT 215 PM CDT...

THE ROTATION ASSOCIATED WITH THIS STORM HAS WEAKENED.

LAT...LON 2956 9046 2977 9051 2980 9023 2973 9021
      2970 9023 2969 9021 2968 9020 2963 9018
TIME...MOT...LOC 1910Z 078DEG 9KT 2969 9035

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 2:54 PM CDTSpecial Marine WarningLIX51 min

Nearby

Tornado Warnings in Louisiana, 2012Every tornado warning in 2012Tornadoes 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; the sounding from the Mesonet's radiosonde archive.