Alert archive / Louisiana / Tornado Warnings in 2012

Tornado Warning 61, NWS Lake Charles, LA

October 18, 2012Avoyelles Parish, Rapides Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Oct 18, 2012, 1:06 AM CDT for Avoyelles Parish, Rapides Parish, Louisiana. It was in force for 24 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
Oct 18, 2012, 1:06 AM CDT (06:06 UTC)
Expired
Oct 18, 2012, 1:30 AM CDT
In force
24 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

Counties Avoyelles Parish, LA, Rapides Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.1 hours before the alert went out and 172 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, Lake Charles Mun, LA at 00:00Z on 2012-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2250 joules per kilogram.LCLEL10008507005003002001001 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, Lake Charles Mun, LA at 00:00Z on 2012-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.19395878Sfc1 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
2250 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
2.2
Supercell composite
11.0

Open this sounding in Storm Lab

The text

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

779 
WFUS54 KLCH 180606
TORLCH
LAC009-079-180630-
/O.NEW.KLCH.TO.W.0061.121018T0606Z-121018T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
106 AM CDT THU OCT 18 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN AVOYELLES PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES...MARKSVILLE...EFFIE...
  NORTHEASTERN RAPIDES PARISH IN CENTRAL LOUISIANA...

* UNTIL 130 AM CDT

* AT 101 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR DEVILLE...
  MOVING SOUTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  BROUILLETTE BY 115 AM CDT...
  MARKSVILLE BY 120 AM CDT...
  LAKE OPHELIA NATIONAL WILDLIFE REFUGE AND MANSURA BY 125 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NATIONAL WEATHER SERVICE RADAR INDICATES A TORNADO MAY FORM AT ANY
TIME. TAKE COVER NOW! ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR AWAY FROM WINDOWS.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT
337-477-5285 EXTENSION 1.

LAT...LON 3136 9207 3133 9207 3135 9203 3132 9200
      3129 9201 3123 9199 3125 9194 3128 9195
      3130 9192 3125 9181 3102 9207 3126 9227
      3140 9213
TIME...MOT...LOC 0606Z 312DEG 33KT 3127 9212

$$

21

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 18, 12:34 AM CDTTornado WarningLCHRapides, Vernon26 min
Oct 18, 12:48 AM CDTTornado WarningLCHRapides27 min
Oct 18, 12:58 AM CDTTornado WarningLCHRapides, Vernon32 min
Oct 18, 1:22 AM CDTSevere Thunderstorm WarningLCHAllen, Avoyelles, Evangeline, Rapides, Vernon53 min
Oct 18, 1:35 AM CDTSpecial Weather StatementLCHAllen, Avoyelles, Beauregard, Calcasieu, Evangeline55 min
Oct 18, 1:49 AM CDTSevere Thunderstorm WarningLCHAvoyelles, Saint Landry56 min
Oct 18, 2:39 AM CDTSpecial Weather StatementLCHAllen, Evangeline, Saint Landry66 min
Oct 18, 2:50 AM CDTSpecial Weather StatementLCHCalcasieu55 min
Oct 18, 2:55 AM CDTSpecial Marine WarningLCH65 min
Oct 18, 3:26 AM CDTSpecial Weather StatementLCHAcadia, Jefferson Davis, Lafayette64 min
Oct 18, 4:24 AM CDTSpecial Weather StatementLCHLafayette, Vermilion66 min
Oct 18, 5:25 AM CDTSpecial Weather StatementLCHIberia, Vermilion65 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.