Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 9, NWS Lake Charles, LA

April 2, 2017Rapides Parish, Vernon Parish, Louisiana; 4 counties in Texas

NWS Lake Charles, LA issued this flash flood warning at Apr 2, 2017, 9:49 PM CDT for Rapides Parish, Vernon Parish, Louisiana; 4 counties in Texas. 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
Apr 2, 2017, 9:49 PM CDT (02:49 UTC)
Expired
Apr 3, 2017, 12:45 AM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Rapides Parish, LA, Vernon Parish, LA, Hardin County, TX, Jasper County, TX, Newton County, TX, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 24 km from the middle of the area, began a volume at 02:48 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
Apr 2, 11:39 PM CDTFLASH FLOODBoyce, LASOCIAL MEDIA VIDEO OF FLOODING IN NEIGHBORHOOD OF BOYCE.

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, 2.8 hours before the alert went out and 122 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 2017-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2242 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 00:00Z on 2017-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 224 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
2242 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
522 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
224 m²/s²
0-3 km storm-relative helicity
281 m²/s²
Significant tornado parameter
4.2
Supercell composite
14.7

Open this sounding in Storm Lab

The text

As transmitted.

527 
WGUS54 KLCH 030249
FFWLCH
LAC079-115-TXC199-241-351-457-030545-
/O.NEW.KLCH.FF.W.0009.170403T0249Z-170403T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
949 PM CDT SUN APR 2 2017

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Northwestern Rapides Parish in central Louisiana...
  Northern Vernon Parish in west central Louisiana...
  Southeastern Tyler County in southeastern Texas...
  Northern Newton County in southeastern Texas...
  Eastern Hardin County in southeastern Texas...
  Southeastern Jasper County in southeastern Texas...

* Until 1245 AM CDT

* At 945 PM CDT, Doppler radar indicated heavy rain across the 
  warned area. 5 to 10 inches of rain have fallen. Flash flooding is 
  already occurring across much of Vernon Parish and some flooding 
  is likely across Jasper, Newton and Hardin Counties.

* Some locations that will experience flooding include...
  Beaumont, Lumberton, Jasper, Leesville, Silsbee, Newton,
  Kirbyville, Kountze, Boyce, Anacoco, Slagle, Toledo Bend Dam, Lena,
  Fred, Burkeville, New Llano, Colfax, Bevil Oaks, Hornbeck and
  Hutton.

Additional rainfall amounts of 1 to 3 inches are possible across 
northern Veron Parish and 1 to 2 inches elsewhere are possible in 
the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3150 9268 3145 9271 3145 9268 3140 9269
      3139 9266 3144 9241 3098 9363 3014 9428
      3026 9448 3116 9384 3117 9358 3120 9355
      3128 9353 3128 9344 3136 9339 3135 9295
      3152 9272

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 7:02 PM CDTSpecial Weather StatementLCHBeauregard, Vernon43 min
Apr 2, 7:10 PM CDTSevere Thunderstorm WarningLCHRapides35 min
Apr 2, 7:28 PM CDTSpecial Weather StatementLCHRapides32 min
Apr 2, 7:34 PM CDTSevere Thunderstorm WarningLCHRapides, Vernon26 min
Apr 2, 8:04 PM CDTSpecial Weather StatementLCHRapides, Vernon41 min
Apr 2, 8:36 PM CDTSpecial Weather StatementLCHBeauregard39 min
Apr 2, 8:59 PM CDTRiver Flood WarningLCHVernon5 days
Apr 2, 8:59 PM CDTRiver Flood WarningLCHBeauregard, Calcasieu8 days
Apr 2, 9:09 PM CDTSpecial Weather StatementLCHRapides51 min
Apr 2, 9:27 PM CDTSpecial Weather StatementLCHBeauregard48 min
Apr 2, 9:28 PM CDTAreal Flood AdvisoryLCHCalcasieu, Jefferson Davis2 hr
Apr 2, 10:04 PM CDTFlash Flood WarningLCHAllen, Avoyelles, Beauregard, Evangeline, Rapides2 hr
Apr 2, 10:20 PM CDTRiver Flood WarningLCHCalcasieu70 hr
Apr 2, 10:20 PM CDTRiver Flood WarningLCHBeauregard4 days
Apr 2, 11:29 PM CDTRiver Flood WarningLCHBeauregard, Vernon53 hr
Apr 2, 11:32 PM CDTAreal Flood AdvisoryLCHCalcasieu118 min
Apr 3, 12:38 AM CDTFlash Flood WarningLCHAllen, Avoyelles, Beauregard, Evangeline, Rapides, Vernon6 hr
Apr 3, 12:39 AM CDTFlash Flood WarningLCHAcadia, Evangeline, Saint Landry6 hr
Apr 3, 3:36 AM CDTSmall Craft AdvisoryLCH3 hr
Apr 3, 4:38 AM CDTSpecial Weather StatementLCHSt. Mary67 min
Apr 3, 6:22 AM CDTAreal Flood WarningLCHAcadia, Allen, Avoyelles, Beauregard, Evangeline, Lafayette and 3 more6 hr
Apr 3, 10:37 AM CDTRiver Flood WarningLCHAllen5 days
Apr 3, 10:37 AM CDTRiver Flood WarningLCHAllen8 days
Apr 3, 10:37 AM CDTRiver Flood WarningLCHAllen, Jefferson Davis7 days
Apr 3, 10:37 AM CDTRiver Flood WarningLCHAllen4 days
Apr 3, 10:37 AM CDTRiver Flood WarningLCHAcadia, Allen, Evangeline, Jefferson Davis72 hr
Apr 3, 1:02 PM CDTAreal Flood WarningLCHAllen, Avoyelles, Beauregard, Evangeline, Rapides, Vernon12 hr
Apr 3, 12:44 AM CDTAreal Flood WarningLCHHardin, Jasper, Newton, Tyler6 hr

Nearby

Flash Flood Warnings in Texas, 2017Flash Flood Warnings in Louisiana, 2017Every flash flood warning in 2017

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.