Alert archive / Louisiana / Tornado Warnings in 2014

Tornado Warning 39, NWS New Orleans, LA

December 23, 2014Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Dec 23, 2014, 4:23 PM CST for Saint John the Baptist Parish, Louisiana. It was in force for 22 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
Dec 23, 2014, 4:23 PM CST (22:23 UTC)
Expired
Dec 23, 2014, 4:45 PM CST
In force
22 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

County Saint John the Baptist Parish, LA

The watch it was issued in

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

IssuedProductOfficeLasted
Dec 23, 9:30 AM CSTTornado WatchSPC11 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.4 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2014-12-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1212 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 2014-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939587897117Sfc1 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
1212 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

079 
WFUS54 KLIX 232223
TORLIX
LAC095-232245-
/O.NEW.KLIX.TO.W.0039.141223T2223Z-141223T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
423 PM CST TUE DEC 23 2014

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  ST. JOHN THE BAPTIST PARISH IN SOUTHEAST LOUISIANA...
  THIS INCLUDES THE CITIES OF...RESERVE...LAPLACE...

* UNTIL 445 PM CST

* AT 422 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR RESERVE...
  MOVING NORTHEAST AT 45 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED PARISH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...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.

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CST TUESDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHEASTERN MISSISSIPPI.

&&

LAT...LON 3015 9065 3018 9057 3018 9056 3018 9049
      3022 9044 3020 9041 3013 9042 3008 9040
      3006 9043 3002 9053 3000 9054 2998 9058
      3010 9065
TIME...MOT...LOC 2224Z 242DEG 41KT 3011 9053

$$

CAB
1 follow-up statement
823 
WWUS54 KLIX 232240
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
440 PM CST TUE DEC 23 2014

LAC095-232250-
/O.EXP.KLIX.TO.W.0039.000000T0000Z-141223T2245Z/
ST. JOHN THE BAPTIST LA-
440 PM CST TUE DEC 23 2014

...THE TORNADO WARNING FOR ST. JOHN THE BAPTIST PARISH WILL EXPIRE AT
445 PM CST...

THIS STORM HAS MOVED INTO LAKE PONTCHARTRAIN.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CST TUESDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHEASTERN MISSISSIPPI.

LAT...LON 3015 9065 3018 9057 3018 9056 3018 9049
      3022 9044 3020 9041 3013 9042 3008 9040
      3006 9043 3002 9053 3000 9054 2998 9058
      3010 9065
TIME...MOT...LOC 2240Z 242DEG 41KT 3020 9034

$$

CAB

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 23, 3:05 AM CSTSpecial Weather StatementLIXAscension, Livingston55 min
Dec 23, 3:18 AM CSTSpecial Marine WarningLIX87 min
Dec 23, 3:34 AM CSTSmall Craft AdvisoryLIX44 hr
Dec 23, 5:11 AM CSTSpecial Weather StatementLIXIberville49 min
Dec 23, 6:22 AM CSTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana38 min
Dec 23, 7:09 AM CSTSpecial Marine WarningLIX51 min
Dec 23, 8:07 AM CSTSpecial Marine WarningLIX83 min
Dec 23, 8:31 AM CSTSpecial Weather StatementLIXEast Baton Rouge, Iberville, West Baton Rouge59 min
Dec 23, 8:35 AM CSTSpecial Weather StatementLIXPlaquemines25 min
Dec 23, 8:41 AM CSTSpecial Marine WarningLIX64 min
Dec 23, 8:43 AM CSTSpecial Marine WarningLIX62 min
Dec 23, 8:59 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena46 min
Dec 23, 9:41 AM CSTSpecial Marine WarningLIX64 min
Dec 23, 9:43 AM CSTSevere Thunderstorm WarningLIXSaint Helena, Tangipahoa47 min
Dec 23, 9:46 AM CSTSpecial Weather StatementLIXPointe Coupee, West Feliciana59 min
Dec 23, 9:51 AM CSTSpecial Marine WarningLIX24 min
Dec 23, 10:17 AM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana43 min
Dec 23, 10:20 AM CSTSevere Thunderstorm WarningLIXIberville, Pointe Coupee, West Feliciana25 min
Dec 23, 10:33 AM CSTTornado WarningLIXWest Feliciana27 min
Dec 23, 10:42 AM CSTSevere Thunderstorm WarningLIXEast Feliciana, Pointe Coupee, West Feliciana48 min
Dec 23, 10:52 AM CSTTornado WarningLIXEast Baton Rouge, East Feliciana, Saint Helena, West Feliciana23 min
Dec 23, 11:28 AM CSTTornado WarningLIXEast Feliciana47 min
Dec 23, 12:33 PM CSTSpecial Weather StatementLIXEast Baton Rouge, Saint Helena57 min
Dec 23, 12:47 PM CSTSpecial Weather StatementLIXLivingston, Saint Helena28 min
Dec 23, 12:55 PM CSTSevere Thunderstorm WarningLIXLivingston, Saint Helena, Tangipahoa, Washington50 min
Dec 23, 1:02 PM CSTTornado WarningLIXLivingston, Saint Helena, Tangipahoa28 min
Dec 23, 1:22 PM CSTTornado WarningLIXTangipahoa, Washington23 min
Dec 23, 1:38 PM CSTTornado WarningLIXWashington37 min
Dec 23, 3:09 PM CSTSpecial Weather StatementLIXWashington66 min
Dec 23, 3:26 PM CSTSpecial Weather StatementLIXAscension, Assumption, Saint James64 min
Dec 23, 3:42 PM CSTTornado WarningLIXAscension, Assumption, Saint James48 min
Dec 23, 4:08 PM CSTSevere Thunderstorm WarningLIXSaint James, Saint John the Baptist30 min
Dec 23, 4:09 PM CSTSevere Thunderstorm WarningLIXLafourche, Saint Charles, Saint John the Baptist35 min
Dec 23, 4:22 PM CSTSpecial Marine WarningLIX53 min
Dec 23, 4:54 PM CSTSpecial Weather StatementLIXWashington66 min

Nearby

Tornado Warnings in Louisiana, 2014Every tornado warning in 2014Tornadoes in 2014

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.