Alert archive / Louisiana / Areal Flood Warnings in 2012

Areal Flood Warning 29, NWS Lake Charles, LA

August 31, 2012Rapides Parish, Louisiana

NWS Lake Charles, LA issued this areal flood warning at Aug 31, 2012, 2:02 PM CDT for Rapides Parish, Louisiana. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 31, 2012, 2:02 PM CDT (19:02 UTC)
Expired
Aug 31, 2012, 5:00 PM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

County Rapides Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.0 hours before the alert went out and 136 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 2012-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2801 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2012-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 square meters per square second.1939Sfc1 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
2801 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
557 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 2:05 AM CDTSpecial Weather StatementLCHRapides55 min
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

Nearby

Areal Flood Warnings in Louisiana, 2012Every areal flood 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.