Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 96, NWS Lake Charles, LA

August 18, 2016Iberia Parish, Saint Martin Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Aug 18, 2016, 2:54 PM CDT for Iberia Parish, Saint Martin Parish, Louisiana. It was in force for 96 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 18, 2016, 2:54 PM CDT (19:54 UTC)
Expired
Aug 18, 2016, 4:30 PM CDT
In force
96 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Iberia Parish, LA, Saint Martin Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.9 hours before the alert went out and 151 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 2016-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1591 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, Lake Charles Mun, LA at 12:00Z on 2016-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
1591 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
669 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

371 
WGUS54 KLCH 181954
FFWLCH
LAC045-099-182130-
/O.NEW.KLCH.FF.W.0096.160818T1954Z-160818T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
254 PM CDT THU AUG 18 2016

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN ST. MARTIN PARISH IN SOUTH CENTRAL LOUISIANA...
  NORTHEASTERN IBERIA PARISH IN SOUTH CENTRAL LOUISIANA...

* UNTIL 430 PM CDT

* AT 253 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. ONE TO TWO INCHES OF RAIN WILL
  BE POSSIBLE ALONG WITH VERY HIGH RAIN RATES. FLASH FLOODING IS
  EXPECTED.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAFAYETTE...NEW IBERIA...CATAHOULA...BREAUX BRIDGE...
  ST. MARTINVILLE...JEANERETTE...HENDERSON...LOREAUVILLE...CECILIA...
  LAKE PELBA...LYDIA...LAKE FAUSSE POINTE...BUTTE LA ROSE AND PARKS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 2998 9132 2995 9162 2989 9179 3033 9196
      3036 9195 3037 9197 3038 9163 3036 9165
      3036 9163 3031 9162 3026 9159 3021 9151
      3010 9146 3010 9140

$$

24
1 follow-up statement
719 
WGUS74 KLCH 182058
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
358 PM CDT THU AUG 18 2016

LAC045-099-182107-
/O.CAN.KLCH.FF.W.0096.000000T0000Z-160818T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. MARTIN LA-IBERIA LA-
358 PM CDT THU AUG 18 2016

...THE FLASH FLOOD WARNING FOR NORTHWESTERN ST. MARTIN AND
NORTHEASTERN IBERIA PARISHES IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 2998 9132 2995 9162 2989 9179 3033 9196
      3036 9195 3037 9197 3038 9163 3036 9165
      3036 9163 3031 9162 3026 9159 3021 9151
      3010 9146 3010 9140

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 1:28 PM CDTFlash Flood WarningLCHAcadia, Iberia, Lafayette, Saint Landry, Saint Martin, Vermilion92 min
Aug 18, 1:35 PM CDTSpecial Weather StatementLCHAllen, Evangeline40 min
Aug 18, 1:56 PM CDTSpecial Weather StatementLCHBeauregard34 min
Aug 18, 2:49 PM CDTSpecial Weather StatementLCHVernon41 min
Aug 18, 5:08 PM CDTAreal Flood AdvisoryLCHCalcasieu52 min

Nearby

Flash Flood Warnings in Louisiana, 2016Every flash flood warning in 2016

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.