Alert archive / Louisiana / Special Weather Statements in 2012

Special Weather Statement, NWS Lake Charles, LA

August 31, 2012Rapides Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Aug 31, 2012, 2:05 AM CDT for Rapides Parish, Louisiana. It was in force for 55 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
Aug 31, 2012, 2:05 AM CDT (07:05 UTC)
Expired
Aug 31, 2012, 3:00 AM CDT
In force
55 min
Issued by
NWS Lake Charles, LA

County Rapides Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.1 hours before the alert went out and 165 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 2012-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 371 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2012-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
371 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 3:00 AM CDTSpecial Weather StatementLCHRapides60 min
Aug 31, 5:27 AM CDTAreal Flood AdvisoryLCHRapides108 min
Aug 31, 7:45 AM CDTAreal Flood AdvisoryLCHAvoyelles, Rapides105 min
Aug 31, 8:11 AM CDTFlash Flood WarningLCHAvoyelles, Rapides6 hr
Aug 31, 11:20 AM CDTSpecial Weather StatementLCHRapides25 min
Aug 31, 12:48 PM CDTAreal Flood AdvisoryLCHAllen117 min
Aug 31, 2:02 PM CDTAreal Flood WarningLCHRapides3 hr

Nearby

Special Weather Statements in Louisiana, 2012Every special weather statement 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.