Alert archive / Louisiana / Flash Flood Warnings in 2003

Flash Flood Warning 3, NWS Lake Charles, LA

April 8, 2003St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Apr 8, 2003, 7:53 AM CDT for St. Mary Parish, Louisiana. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 8, 2003, 7:53 AM CDT (12:53 UTC)
Expired
Apr 8, 2003, 10:00 AM CDT
In force
2 hr
Issued by
NWS Lake Charles, LA
Area
Counties, with a storm outline in the text

County St. Mary Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.9 hours before the alert went out and 176 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 2003-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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, Slidell Radar S, LA at 12:00Z on 2003-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 square meters per square second.1939587897Sfc1 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
73 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
708 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
230 m²/s²
0-3 km storm-relative helicity
427 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KLCH 081257
FFWLCH
LAC101-081500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
753 AM CDT TUE APR 8 2003

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. MARY PARISH IN SOUTH CENTRAL LOUISIANA

* UNTIL 1000 AM CDT

* AT 750 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED   
THAT 3 INCHES OF RAIN HAS FALLEN ACROSS SAINT MARY PARISH DURING 
THE   PAST 2 HOURS. 2 INCHES OF ADDITIONAL RAINFALL IS EXPECTED IN 
THE WARNED AREA THROUGH 1000 AM.

CALL 337-477-5285 TO REPORT FLOODING TO THE WEATHER SERVICE.

LAT...LON 2965 9111 2951 9131 2974 9183 2990 9163
          2984 9150

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 12:39 AM CDTSevere Thunderstorm WarningLCHSt. Mary66 min
Apr 8, 1:49 AM CDTSevere Thunderstorm WarningLCHIberia56 min
Apr 8, 3:54 AM CDTSevere Thunderstorm WarningLCHCameron66 min
Apr 8, 6:42 AM CDTSevere Thunderstorm WarningLCHSaint Martin, St. Mary63 min

Nearby

Flash Flood Warnings in Louisiana, 2003Every flash flood warning in 2003

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.