Alert archive / Louisiana / Tornado Warnings in 2012

Tornado Warning 54, NWS Lake Charles, LA

April 5, 2012Avoyelles Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 5, 2012, 1:22 AM CDT for Avoyelles Parish, Louisiana. It was in force for 23 min. 1 report 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
Apr 5, 2012, 1:22 AM CDT (06:22 UTC)
Expired
Apr 5, 2012, 1:45 AM CDT
In force
23 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

County Avoyelles Parish, LA

What was reported inside it

TimeReportWhereRemark
Apr 5, 1:29 AM CDTHAIL 0.53 Se Cottonport, LAPUBLIC REPORTS VIA FACEBOOK DIME SIZE HAIL BETWEEN COTTONPORT AND PLAUCHEVILLE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.4 hours before the alert went out and 160 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 2012-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2323 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, Lake Charles Mun, LA at 00:00Z on 2012-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
2323 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
739 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

121 
WFUS54 KLCH 050622
TORLCH
LAC009-050645-
/O.NEW.KLCH.TO.W.0054.120405T0622Z-120405T0645Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
122 AM CDT THU APR 5 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN AVOYELLES PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES SIMMESPORT...

* UNTIL 145 AM CDT

* AT 120 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  EVERGREEN...MOVING EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  PLAUCHEVILLE BY 130 AM CDT...
  DUPONT BY 135 AM CDT...
  SIMMESPORT BY 145 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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL.

&&

PLEASE REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT FOR RELAY TO 
THE NATIONAL WEATHER SERVICE.

LAT...LON 3104 9172 3098 9178 3098 9180 3089 9179
      3086 9180 3085 9182 3089 9214 3096 9214
      3107 9171
TIME...MOT...LOC 0621Z 268DEG 26KT 3092 9206

$$

25

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 4, 7:18 PM CDTSpecial Marine WarningLCH39 min
Apr 4, 8:25 PM CDTSpecial Marine WarningLCH69 min
Apr 4, 8:38 PM CDTRiver Flood WarningLCHCalcasieu6 days
Apr 4, 10:25 PM CDTSpecial Marine WarningLCH65 min
Apr 5, 12:55 AM CDTSevere Thunderstorm WarningLCHAvoyelles, Evangeline, Rapides35 min
Apr 5, 1:44 AM CDTTornado WarningLCHAvoyelles, Saint Landry31 min
Apr 5, 2:44 AM CDTSpecial Weather StatementLCHSt. Mary31 min
Apr 5, 3:25 AM CDTSpecial Weather StatementLCHSt. Mary35 min
Apr 5, 3:37 AM CDTSevere Thunderstorm WarningLCHSaint Martin, St. Mary23 min
Apr 5, 4:30 AM CDTSpecial Weather StatementLCHSaint Martin45 min
Apr 5, 5:26 AM CDTSpecial Weather StatementLCHAssumption34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.