Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 24, NWS Lake Charles, LA

April 18, 2016Calcasieu Parish, Cameron Parish, Louisiana; Orange County, Texas

NWS Lake Charles, LA issued this flash flood warning at Apr 18, 2016, 4:26 PM CDT for Calcasieu Parish, Cameron Parish, Louisiana; Orange County, Texas. It was in force for 3 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 18, 2016, 4:26 PM CDT (21:26 UTC)
Expired
Apr 18, 2016, 7:30 PM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Calcasieu Parish, LA, Cameron Parish, LA, Orange County, TX

The radar

The Lake Charles radar (KLCH), 75 km from the middle of the area, began a volume at 21:28 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.4 hours before the alert went out and 76 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 2016-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 283 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, Lake Charles Mun, LA at 12:00Z on 2016-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.193958Sfc1 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
283 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

804 
WGUS54 KLCH 182126
FFWLCH
LAC019-023-TXC361-190030-
/O.NEW.KLCH.FF.W.0024.160418T2126Z-160419T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
426 PM CDT MON APR 18 2016

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CAMERON PARISH IN SOUTHWESTERN LOUISIANA...
  SOUTHWESTERN CALCASIEU PARISH IN SOUTHWESTERN LOUISIANA...
  ORANGE COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 730 PM CDT

* AT 422 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  WARNED AREA. FOUR TO SEVEN INCHES OF RAIN HAVE FALLEN...AND FLASH
  FLOODING IS ALREADY OCCURRING. RAINFALL IS DIMINISHING ACROSS THE
  AREA BUT RUNOFF FROM EARLIER HEAVY RAINS WILL CONTINUE THE
  POTENTIAL FOR FLASH FLOODING THE NEXT FEW HOURS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BEAUMONT...PORT ARTHUR...ORANGE...VIDOR...BRIDGE CITY...WEST ORANGE...
  MAURICEVILLE...ROSE CITY...PINE FOREST...FOREST HEIGHTS AND
  ORANGEFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 3020 9410 3020 9409 3024 9410 3025 9366
      3000 9365 3000 9395 3001 9396 3001 9398
      3002 9398 3001 9399 3003 9400 3005 9403
      3007 9403 3006 9404 3009 9407 3012 9407
      3016 9410

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 6:25 AM CDTFlash Flood WatchLCHBeauregard, Cameron, Vernon31 hr
Apr 18, 9:36 AM CDTSpecial Marine WarningLCH39 min
Apr 18, 10:12 AM CDTSpecial Marine WarningLCH33 min
Apr 18, 10:38 AM CDTRiver Flood WarningLCHBeauregard, Calcasieu58 days
Apr 18, 1:15 PM CDTFlash Flood WarningLCHCalcasieu, Cameron3 hr
Apr 18, 2:59 PM CDTAreal Flood AdvisoryLCHCalcasieu3 hr
Apr 18, 3:47 PM CDTSmall Craft AdvisoryLCH15 hr
Apr 18, 4:23 PM CDTSpecial Weather StatementLCHAllen, Beauregard, Calcasieu, Cameron, Jefferson Davis67 min
Apr 18, 6:17 AM CDTSpecial Weather StatementLCHHardin43 min
Apr 18, 6:59 AM CDTSpecial Weather StatementLCHHardin46 min
Apr 18, 7:46 AM CDTAreal Flood AdvisoryLCHJefferson3 hr
Apr 18, 9:05 AM CDTAreal Flood AdvisoryLCHJefferson, Orange3 hr
Apr 18, 9:31 AM CDTRiver Flood WarningLCHJefferson, Orange25 days
Apr 18, 9:44 AM CDTFlash Flood WarningLCHJefferson3 hr
Apr 18, 10:15 AM CDTFlash Flood WarningLCHOrange3 hr
Apr 18, 10:42 AM CDTSpecial Weather StatementLCHJefferson48 min
Apr 18, 11:26 AM CDTFlash Flood WarningLCHJasper, Newton3 hr
Apr 18, 11:49 AM CDTFlash Flood WarningLCHHardin3 hr
Apr 18, 2:22 PM CDTFlash Flood WarningLCHJasper, Newton6 hr
Apr 18, 2:32 PM CDTAreal Flood AdvisoryLCHHardin, Jasper, Newton, Tyler3 hr
Apr 18, 2:52 PM CDTAreal Flood WarningLCHHardin30 hr
Apr 18, 3:43 PM CDTRiver Flood WarningLCHHardin, Jasper9 days
Apr 18, 3:43 PM CDTRiver Flood WarningLCHHardin4 days
Apr 18, 3:43 PM CDTRiver Flood WarningLCHHardin, Jefferson11 days

Nearby

Flash Flood Warnings in Louisiana, 2016Flash Flood Warnings in Texas, 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; radar from the NEXRAD Level II archive.