Alert archive / Louisiana / Areal Flood Advisories in 2013

Areal Flood Advisory 21, NWS Lake Charles, LA

April 14, 20135 parishes in Louisiana

NWS Lake Charles, LA issued this areal flood advisory at Apr 14, 2013, 7:25 AM CDT for 5 parishes in Louisiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 14, 2013, 7:25 AM CDT (12:25 UTC)
Expired
Apr 14, 2013, 10:15 AM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.4 hours before the alert went out and 224 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 12:00Z on 2013-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Slidell Radar S, LA at 12:00Z on 2013-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 586 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
534 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
586 m²/s²
0-3 km storm-relative helicity
776 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 10:20 PM CDTSpecial Marine WarningLCH25 min
Apr 13, 10:41 PM CDTSpecial Weather StatementLCHSt. Mary49 min
Apr 13, 11:06 PM CDTSpecial Marine WarningLCH39 min
Apr 13, 11:24 PM CDTSevere Thunderstorm WarningLCHIberia, Saint Martin51 min
Apr 13, 11:53 PM CDTSpecial Weather StatementLCHSt. Mary52 min
Apr 14, 12:07 AM CDTSpecial Weather StatementLCHSaint Martin38 min
Apr 14, 12:39 AM CDTSpecial Weather StatementLCHSaint Martin51 min
Apr 14, 12:57 AM CDTSpecial Weather StatementLCHAcadia63 min
Apr 14, 12:59 AM CDTSmall Craft Advisory for WindsLCH6 hr
Apr 14, 1:19 AM CDTAreal Flood AdvisoryLCHIberia, Lafayette, Saint Landry, Saint Martin, St. Mary, Vermilion116 min
Apr 14, 2:21 AM CDTSpecial Weather StatementLCHSaint Landry54 min
Apr 14, 3:19 AM CDTAreal Flood AdvisoryLCHAcadia, Cameron, Jefferson Davis, Lafayette, Saint Landry, Saint Martin and 1 more116 min
Apr 14, 12:16 PM CDTRiver Flood WarningLCHLafayette, Vermilion24 hr

Nearby

Areal Flood Advisories in Louisiana, 2013Every areal flood advisory in 2013

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.