Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 85, NWS Lake Charles, LA

August 14, 2016Saint Martin Parish, St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Aug 14, 2016, 4:32 AM CDT for Saint Martin Parish, St. Mary Parish, Louisiana. It was in force for 3 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, 4:32 AM CDT (09:32 UTC)
Expired
Aug 14, 2016, 8:00 AM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Saint Martin Parish, LA, St. Mary Parish, LA

What was reported inside it

TimeReportWhereRemark
Aug 14, 7:59 AM CDTFLASH FLOOD2 Ssw Centerville, LALA 317 CLOSED AT MM 3 DUE TO FLASH FLOOD

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, 9.5 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, 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.

216 
WGUS54 KLCH 140932
FFWLCH
LAC099-101-141300-
/O.NEW.KLCH.FF.W.0085.160814T0932Z-160814T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

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

* UNTIL 800 AM CDT

* AT 429 AM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  WARNED AREA. TWO TO FOUR INCHES OF RAIN HAVE FALLEN IN THE PAST
  FEW HOURS. FLASH FLOODING IS LIKELY OCCURRING DUE TO THE SATURATED
  GROUND. AN ADDITIONAL ONE TO FOUR INCHES OF RAIN IS POSSIBLE
  THROUGH THE EARLY MORNING HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MORGAN CITY...FRANKLIN...PATTERSON...JEANERETTE...BERWICK...
  BAYOU VISTA...BURNS POINT...STEPHENSVILLE...BALDWIN...CHARENTON...
  AMELIA...PATTERSON MEMORIAL AIRPORT...SORREL...ELLERSLIE...
  PIERRE PART AND CENTERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2955 9128 2946 9130 2952 9136 2952 9142
      2955 9141 2952 9155 2955 9152 2963 9155
      2963 9166 2975 9160 2974 9163 2975 9166
      2976 9162 2976 9166 2991 9165 2994 9163
      2997 9125 2986 9120 2980 9109 2963 9108

$$

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, 2:00 AM CDTFlash Flood WarningLCHAcadia, Cameron, Iberia, Lafayette, Saint Landry, Saint Martin and 2 more6 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, 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.