Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 84, NWS Lake Charles, LA

August 14, 20168 parishes in Louisiana

NWS Lake Charles, LA issued this flash flood warning at Aug 14, 2016, 2:00 AM CDT for 8 parishes in Louisiana. It was in force for 6 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 14, 2016, 2:00 AM CDT (07:00 UTC)
Expired
Aug 14, 2016, 8:00 AM CDT
In force
6 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Acadia Parish, LA, Cameron Parish, LA, Iberia Parish, LA, Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 130 km from the middle of the area, began a volume at 07:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 14, 6:51 AM CDTFLASH FLOODAbbeville, LAPHOTO OF FLOODING ON HOLLINGSWORTH DRIVE IN ABBEVILLE SENT IN VIA TWITTER

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.0 hours before the alert went out and 128 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 2016-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 617 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 00:00Z on 2016-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
617 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted.

909 
WGUS54 KLCH 140700
FFWLCH
LAC001-023-045-055-097-099-101-113-141300-
/O.NEW.KLCH.FF.W.0084.160814T0700Z-160814T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
200 AM CDT SUN AUG 14 2016

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN CAMERON PARISH IN SOUTHWESTERN LOUISIANA...
  VERMILION PARISH IN SOUTHWESTERN LOUISIANA...
  NORTHWESTERN ST. MARTIN PARISH IN SOUTH CENTRAL LOUISIANA...
  IBERIA PARISH IN SOUTH CENTRAL LOUISIANA...
  NORTHWESTERN ST. MARY PARISH IN SOUTH CENTRAL LOUISIANA...
  EASTERN ST. LANDRY PARISH IN CENTRAL LOUISIANA...
  SOUTHEASTERN ACADIA PARISH IN SOUTHWESTERN LOUISIANA...
  LAFAYETTE PARISH IN SOUTH CENTRAL LOUISIANA...

* UNTIL 800 AM CDT SUNDAY

* AT 157 AM CDT...DOPPLER RADAR INDICATED MODERATE TO HEAVY RAIN AT
  TIMES ACROSS THE WARNED AREA. ONE TO THREE INCHES OF RAIN HAVE
  FALLEN IN THE PAST SIX HOURS AND ADDITIONAL MODERATE TO HEAVY
  RAINFALL IS FORECAST TO MOVE INLAND FROM THE GULF OVERNIGHT. FLASH
  FLOODING IS ALREADY OCCURRING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAFAYETTE...NEW IBERIA...ABBEVILLE...CATAHOULA...SCOTT...
  BREAUX BRIDGE...ST. MARTINVILLE...JEANERETTE...KAPLAN...
  FORKED ISLAND...INTRACOASTAL CITY...CYPREMORT POINT...
  ROCKEFELLER WILDLIFE RANGE...PECAN ISLAND...AVERY ISLAND...
  BROUSSARD...YOUNGSVILLE...ERATH...DELCAMBRE AND DUSON.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO FOUR INCHES ARE POSSIBLE IN
THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 2962 9202 2962 9204 2961 9205 2952 9198
      2958 9205 2967 9288 3029 9215 3025 9199
      3049 9170 3044 9164 2975 9166 2971 9184
      2961 9178 2971 9185 2970 9186 2954 9172
      2948 9181 2951 9190 2944 9183

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 1:51 AM CDTAreal Flood WarningLCHRapides, Vernon3 hr
Aug 14, 2:09 AM CDTAreal Flood WarningLCHAcadia, Allen, Cameron, Evangeline, Jefferson Davis, Lafayette and 3 more6 hr
Aug 14, 2:15 AM CDTAreal Flood WarningLCHCalcasieu, Cameron6 hr
Aug 14, 4:32 AM CDTFlash Flood WarningLCHSaint Martin, St. Mary3 hr
Aug 14, 5:02 AM CDTSpecial Marine WarningLCH88 min
Aug 14, 6:38 AM CDTAreal Flood AdvisoryLCHBeauregard, Vernon3 hr
Aug 14, 7:47 AM CDTAreal Flood WarningLCHAcadia, Allen, Cameron, Evangeline, Iberia, Jefferson Davis and 5 more6 hr
Aug 14, 7:52 AM CDTAreal Flood WarningLCHCalcasieu6 hr
Aug 14, 1:50 PM CDTAreal Flood WarningLCHAcadia, Allen, Cameron, Evangeline, Iberia, Jefferson Davis and 5 more9 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.