Alert archive / Louisiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 49, NWS Lake Charles, LA

May 31, 2012Allen Parish, Evangeline Parish, Rapides Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at May 31, 2012, 12:02 PM CDT for Allen Parish, Evangeline Parish, Rapides Parish, Louisiana. It was in force for 58 min. 3 reports 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
May 31, 2012, 12:02 PM CDT (17:02 UTC)
Expired
May 31, 2012, 1:00 PM CDT
In force
58 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

Counties Allen Parish, LA, Evangeline Parish, LA, Rapides Parish, LA

What was reported inside it

TimeReportWhereRemark
May 31, 12:22 PM CDTTSTM WND DMGAlexandria, LARAPIDES POLICE RELAYED REPORT OF MULTIPLE TREES DOWN ON CARS IN ALEXANDRIA
May 31, 12:23 PM CDTTSTM WND DMGPine Prairie, LAMULTIPLE TREES DOWN IN EVANGELINE PARISH ALONG HWY 104.. HWY 106... 29 SOUTH...BEAVER RD...OAKDALE RD
May 31, 12:54 PM CDTTSTM WND DMGBeaver, LASHERIFF REPORTING MULTIPLE TREES DOWN AND POWER LINES ALONG HWY 10

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

The watch it was issued in

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

IssuedProductOfficeLasted
May 31, 10:41 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.0 hours before the alert went out and 131 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 12:00Z on 2012-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2548 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 12:00Z on 2012-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.193958Sfc1 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
2548 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

729 
WUUS54 KLCH 311702
SVRLCH
LAC003-039-079-311800-
/O.NEW.KLCH.SV.W.0049.120531T1702Z-120531T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1202 PM CDT THU MAY 31 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN EVANGELINE PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES TURKEY CREEK...
  CENTRAL RAPIDES PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES...PINEVILLE...GLENMORA...ALEXANDRIA INTERNATIONAL
  AIRPORT...ALEXANDRIA...
  NORTHEASTERN ALLEN PARISH IN SOUTHWEST LOUISIANA...
  THIS INCLUDES...OAKDALE...ELIZABETH...

* UNTIL 100 PM CDT

* AT 1202 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS
  IN EXCESS OF 60 MPH...FROM 9 MILES WEST OF ALEXANDRIA INTERNATIONAL
  AIRPORT TO 10 MILES SOUTH OF ELIZABETH...MOVING EAST AT 15 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  ELMER BY 1210 PM CDT...
  ALEXANDRIA INTERNATIONAL AIRPORT AND ALLEN PARISH AIRPORT BY 1230
  PM CDT...
  OAKDALE BY 1235 PM CDT...
  GLENMORA BY 1240 PM CDT...
  ALEXANDRIA BY 1250 PM CDT...
  PINEVILLE...KINGSVILLE...PARADISE AND BEAVER BY 1255 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN. STAY INDOORS...
AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN LOUISIANA AND SOUTHEAST TEXAS.

&&

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

LAT...LON 3143 9228 3071 9240 3072 9284 3139 9270
TIME...MOT...LOC 1702Z 269DEG 14KT 3131 9267 3073 9282

$$
1 follow-up statement
010 
WWUS54 KLCH 311755
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1255 PM CDT THU MAY 31 2012

LAC003-039-079-311805-
/O.EXP.KLCH.SV.W.0049.000000T0000Z-120531T1800Z/
RAPIDES LA-EVANGELINE LA-ALLEN LA-
1255 PM CDT THU MAY 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ALLEN...
NORTHWESTERN EVANGELINE AND CENTRAL RAPIDES PARISHES HAS EXPIRED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN LOUISIANA AND SOUTHEAST TEXAS.

LAT...LON 3143 9228 3071 9240 3072 9284 3139 9270
TIME...MOT...LOC 1755Z 269DEG 14KT 3131 9243 3073 9258

$$

06

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 8:44 PM CDTSpecial Weather StatementLCHAvoyelles61 min
May 31, 10:17 AM CDTSpecial Weather StatementLCHBeauregard, Vernon58 min
May 31, 10:49 AM CDTSevere Thunderstorm WarningLCHBeauregard41 min
May 31, 11:23 AM CDTSevere Thunderstorm WarningLCHBeauregard, Calcasieu32 min
May 31, 11:34 AM CDTSevere Thunderstorm WarningLCHRapides, Vernon56 min
May 31, 12:48 PM CDTSevere Thunderstorm WarningLCHEvangeline, Saint Landry57 min
May 31, 12:58 PM CDTSevere Thunderstorm WarningLCHAvoyelles, Evangeline, Saint Landry62 min
May 31, 1:15 PM CDTSpecial Weather StatementLCHLafayette60 min
May 31, 1:42 PM CDTSpecial Weather StatementLCHSaint Martin63 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2012Every severe thunderstorm warning 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.