Alert archive / Louisiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Lake Charles, LA

January 25, 20124 parishes in Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jan 25, 2012, 7:19 PM CST for 4 parishes in Louisiana. It was in force for 56 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
Jan 25, 2012, 7:19 PM CST (01:19 UTC)
Expired
Jan 25, 2012, 8:15 PM CST
In force
56 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

Counties Avoyelles Parish, LA, Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA

The watch it was issued in

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

IssuedProductOfficeLasted
Jan 25, 2:08 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.3 hours before the alert went out and 213 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 00:00Z on 2012-01-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 794 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 00:00Z on 2012-01-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 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
794 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
544 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

475 
WUUS54 KLCH 260119
SVRLCH
LAC009-055-097-099-260215-
/O.NEW.KLCH.SV.W.0013.120126T0119Z-120126T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
719 PM CST WED JAN 25 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  AVOYELLES PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES...SIMMESPORT...MOREAUVILLE...MARKSVILLE...EFFIE...
  BORDELONVILLE...
  ST. LANDRY PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES...MORROW...BAYOU CURRENT...PALMETTO...OPELOUSAS...
  MELVILLE...LEONVILLE...KROTZ SPRINGS...ARNAUDVILLE...
  LAFAYETTE PARISH IN SOUTH CENTRAL LOUISIANA...
  THIS INCLUDES...SCOTT...LAFAYETTE...CARENCRO...
  NORTHWESTERN ST. MARTIN PARISH IN SOUTH CENTRAL LOUISIANA...
  THIS INCLUDES...CATAHOULA...BREAUX BRIDGE...WHISKEY BAY...

* UNTIL 815 PM CST

* AT 718 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS
  IN EXCESS OF 60 MPH...FROM 11 MILES NORTHWEST OF MORROW TO 7 MILES
  NORTHWEST OF SCOTT...MOVING NORTHEAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  HESSMER...MORROW...WASHINGTON AND SUNSET BY 725 PM CST...
  EFFIE...GOUDEAU...COTTONPORT AND BIG CANE BY 730 PM CST...
  MANSURA AND MARKSVILLE BY 735 PM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST WEDNESDAY EVENING
FOR SOUTHWESTERN LOUISIANA.

&&

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

LAT...LON 3123 9199 3130 9191 3119 9167 3114 9171
      3105 9171 3098 9180 3085 9181 3071 9173
      3051 9173 3043 9163 3037 9164 3026 9159
      3023 9147 3012 9146 3013 9217 3029 9214
      3033 9216 3103 9214 3130 9217 3133 9200
TIME...MOT...LOC 0118Z 247DEG 26KT 3096 9215 3062 9209
          3033 9211

$$

K. KUYPER

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 25, 6:29 PM CSTSevere Thunderstorm WarningLCHAcadia, Allen, Avoyelles, Cameron, Evangeline, Jefferson Davis and 2 more61 min
Jan 25, 6:55 PM CSTSevere Thunderstorm WarningLCHLafayette35 min
Jan 25, 6:57 PM CSTSpecial Marine WarningLCH63 min
Jan 25, 7:34 PM CSTSpecial Weather StatementLCHIberia, Saint Martin56 min
Jan 25, 7:59 PM CSTSpecial Marine WarningLCH2 hr
Jan 25, 8:45 PM CSTSpecial Weather StatementLCHSaint Landry60 min
Jan 25, 10:41 PM CSTSpecial Weather StatementLCHSaint Martin64 min
Jan 26, 2:24 AM CSTSmall Craft AdvisoryLCH22 hr
Jan 26, 6:13 AM CSTRiver Flood WarningLCHRapides38 hr
Jan 26, 10:15 AM CSTRiver Flood WarningLCHCalcasieu10 hr

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; the sounding from the Mesonet's radiosonde archive.