Alert archive / Louisiana / Flash Flood Warnings in 2017

Flash Flood Warning 64, NWS Lake Charles, LA

August 27, 20174 parishes in Louisiana; Newton County, Orange County, Texas

NWS Lake Charles, LA issued this flash flood warning at Aug 27, 2017, 11:58 PM CDT for 4 parishes in Louisiana; Newton County, Orange County, Texas. It was in force for 8 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
Aug 27, 2017, 11:58 PM CDT (04:58 UTC)
Expired
Aug 28, 2017, 8:00 AM CDT
In force
8 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA, Newton County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 6 km from the middle of the area, began a volume at 04:57 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 00:00Z, 5.0 hours before the alert went out and 8 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 2017-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 311 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 2017-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 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
311 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
714 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted.

715 
WGUS54 KLCH 280458
FFWLCH
LAC011-019-023-053-TXC351-361-281100-
/O.NEW.KLCH.FF.W.0064.170828T0458Z-170828T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
1158 PM CDT SUN AUG 27 2017

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Northern Cameron Parish in southwestern Louisiana...
  Jefferson Davis Parish in southwestern Louisiana...
  Southern Beauregard Parish in southwestern Louisiana...
  Calcasieu Parish in southwestern Louisiana...
  Southwestern Newton County in southeastern Texas...
  Eastern Orange County in southeastern Texas...

* Until 600 AM CDT Monday

* At 1156 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 2 to 5 inches of rain have 
  fallen across the warned area today. Flash flooding is expected to 
  begin shortly.

* Some locations that will experience flooding include...
  Lake Charles, Sulphur, Orange, Jennings, Westlake, West Orange,
  Welsh, Vinton, Iowa, Lake Arthur, Elton, Fenton, Grand Lake,
  Deweyville, Hayes, Moss Bluff, De Quincy, Ragley, Lacassine
  National Wildlife Refuge and Lake Charles Regional Airport.

Additional rainfall amounts of 1 to 2 inches per hour are expected 
to develop with additional total rainfall amounts of 3 to 6 inches 
possible in the warned area by daybreak.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 2997 9376 2999 9379 3000 9377 3011 9380
      3025 9389 3054 9388 3051 9313 3042 9313
      3044 9278 3049 9277 3048 9263 3008 9263
      3004 9272 3004 9263 2994 9263 2994 9325
      3005 9328 3005 9333 2994 9334 2993 9376

$$

Rua
2 follow-up statements
098 
WGUS74 KLCH 280827
FFSLCH

Flash Flood Statement
National Weather Service Lake Charles LA
327 AM CDT MON AUG 28 2017

LAC011-019-023-053-TXC351-361-281100-
/O.CON.KLCH.FF.W.0064.000000T0000Z-170828T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron LA-Jefferson Davis LA-Beauregard LA-Calcasieu LA-Newton TX-
Orange TX-
327 AM CDT MON AUG 28 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 AM CDT FOR
NORTHERN CAMERON...JEFFERSON DAVIS...SOUTHERN BEAUREGARD AND
CALCASIEU PARISHES...SOUTHWESTERN NEWTON AND EASTERN ORANGE
COUNTIES...

At 321 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. 3 to 6 inches of rain have fallen 
across the warned area. Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Lake Charles, Sulphur, Orange, Jennings, Westlake, West Orange,
Welsh, Vinton, Iowa, Lake Arthur, Elton, Fenton, Grand Lake,
Deweyville, Hayes, Moss Bluff, De Quincy, Ragley, Lacassine National
Wildlife Refuge and Lake Charles Regional Airport.

Additional rainfall amounts of 1 to 2 inches are expected with 3 to 
6 inches possible in the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 2997 9376 2999 9379 3000 9377 3011 9380
      3025 9389 3054 9388 3051 9313 3042 9313
      3044 9278 3049 9277 3048 9263 3008 9263
      3004 9272 3004 9263 2994 9263 2994 9325
      3005 9328 3005 9333 2994 9334 2993 9376

$$

TWH
920 
WGUS54 KLCH 281051
FFWLCH
LAC011-019-023-053-TXC351-361-281300-
/O.EXT.KLCH.FF.W.0064.000000T0000Z-170828T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
551 AM CDT MON AUG 28 2017

The National Weather Service in Lake Charles has extended the

* Flash Flood Warning for...
  Northern Cameron Parish in southwestern Louisiana...
  Jefferson Davis Parish in southwestern Louisiana...
  Southern Beauregard Parish in southwestern Louisiana...
  Calcasieu Parish in southwestern Louisiana...
  Southwestern Newton County in southeastern Texas...
  Eastern Orange County in southeastern Texas...

* Until 800 AM CDT

* At 549 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 4 to 7 inches of rain have 
  fallen since yesterday. Flash flooding is already occurring.

* Some locations that will experience flooding include...
  Lake Charles, Sulphur, Orange, Jennings, Westlake, West Orange,
  Welsh, Vinton, Iowa, Lake Arthur, Elton, Fenton, Grand Lake,
  Deweyville, Hayes, Moss Bluff, De Quincy, Ragley, Lacassine
  National Wildlife Refuge and Lake Charles Regional Airport.

Additional rainfall amounts of 2 to 4 inches expected with locally 
higher amounts possible in the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 2997 9376 2999 9379 3000 9377 3011 9380
      3025 9389 3054 9388 3051 9313 3042 9313
      3044 9278 3049 9277 3048 9263 3008 9263
      3004 9272 3004 9263 2994 9263 2994 9325
      3005 9328 3005 9333 2994 9334 2993 9376

$$

06

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 7:02 PM CDTSpecial Marine WarningLCH43 min
Aug 27, 7:07 PM CDTSpecial Marine WarningLCH53 min
Aug 27, 7:28 PM CDTSpecial Marine WarningLCH62 min
Aug 27, 7:41 PM CDTSpecial Marine WarningLCH49 min
Aug 27, 8:00 PM CDTSpecial Marine WarningLCH60 min
Aug 27, 8:18 PM CDTSpecial Marine WarningLCH57 min
Aug 27, 8:31 PM CDTRiver Flood WarningLCHBeauregard7 days
Aug 27, 8:31 PM CDTRiver Flood WarningLCHRapides12 days
Aug 27, 8:31 PM CDTRiver Flood WarningLCHAllen, Jefferson Davis11 days
Aug 27, 8:31 PM CDTRiver Flood WarningLCHAcadia, Allen, Evangeline, Jefferson Davis8 days
Aug 27, 8:31 PM CDTRiver Flood WarningLCHVernon9 days
Aug 27, 8:50 PM CDTSpecial Marine WarningLCH55 min
Aug 27, 9:00 PM CDTSpecial Marine WarningLCH60 min
Aug 27, 9:21 PM CDTSpecial Marine WarningLCH54 min
Aug 27, 9:43 PM CDTSpecial Marine WarningLCH62 min
Aug 27, 10:06 PM CDTSpecial Marine WarningLCH54 min
Aug 27, 10:31 PM CDTRiver Flood WarningLCHLafayette, Vermilion11 days
Aug 27, 10:44 PM CDTSpecial Marine WarningLCH61 min
Aug 27, 11:03 PM CDTSpecial Marine WarningLCH57 min
Aug 27, 11:43 PM CDTSpecial Marine WarningLCH32 min
Aug 27, 11:48 PM CDTTornado WarningLCHCameron27 min
Aug 27, 11:50 PM CDTSpecial Marine WarningLCH55 min
Aug 28, 12:19 AM CDTTornado WarningLCHCameron26 min
Aug 28, 12:22 AM CDTSpecial Marine WarningLCH23 min
Aug 28, 12:44 AM CDTSpecial Marine WarningLCH2 hr
Aug 28, 12:45 AM CDTSpecial Marine WarningLCH60 min
Aug 28, 12:52 AM CDTSpecial Marine WarningLCH53 min
Aug 28, 12:55 AM CDTSpecial Weather StatementLCHVermilion50 min
Aug 28, 1:40 AM CDTSevere Thunderstorm WarningLCHCameron65 min
Aug 28, 1:46 AM CDTSpecial Marine WarningLCH89 min
Aug 28, 1:53 AM CDTSpecial Marine WarningLCH67 min
Aug 28, 2:36 AM CDTSpecial Weather StatementLCHJefferson Davis39 min
Aug 28, 2:55 AM CDTSpecial Marine WarningLCH50 min
Aug 28, 3:19 AM CDTSpecial Weather StatementLCHCalcasieu41 min
Aug 28, 4:00 AM CDTSpecial Marine WarningLCH60 min
Aug 28, 4:23 AM CDTSpecial Marine WarningLCH67 min
Aug 28, 5:00 AM CDTCoastal Flood AdvisoryLCHCameron9 hr
Aug 28, 5:05 AM CDTSpecial Marine WarningLCH115 min
Aug 28, 5:10 AM CDTSevere Thunderstorm WarningLCHCameron35 min
Aug 28, 6:19 AM CDTSpecial Marine WarningLCH116 min
Aug 28, 6:53 AM CDTTornado WarningLCHAcadia37 min
Aug 28, 7:34 AM CDTFlash Flood WarningLCHAcadia5 hr
Aug 28, 7:43 AM CDTTornado WarningLCHAllen, Jefferson Davis47 min
Aug 28, 7:52 AM CDTTornado WarningLCHCameron, Vermilion38 min
Aug 28, 7:54 AM CDTFlash Flood WarningLCHBeauregard, Calcasieu, Cameron, Jefferson Davis11 hr
Aug 28, 8:14 AM CDTFlash Flood WarningLCHAllen, Beauregard, Jefferson Davis, Vernon11 hr
Aug 28, 8:27 AM CDTTornado WarningLCHCameron, Vermilion33 min
Aug 28, 8:28 AM CDTTornado WarningLCHCameron, Vermilion32 min
Aug 28, 8:31 AM CDTTornado WarningLCHAllen29 min
Aug 28, 8:40 AM CDTTornado WarningLCHIberia, St. Mary35 min
Aug 28, 9:00 AM CDTTornado WarningLCHCalcasieu17 min
Aug 28, 9:06 AM CDTSpecial Marine WarningLCH54 min
Aug 28, 9:18 AM CDTRiver Flood WarningLCHBeauregard, Vernon10 days
Aug 28, 9:28 AM CDTFlash Flood WarningLCHAllen, Avoyelles, Evangeline, Rapides, Saint Landry, Vernon6 hr
Aug 28, 9:37 AM CDTFlash Flood WarningLCHAcadia, Iberia, Lafayette, Saint Landry, Saint Martin, St. Mary and 1 more13 hr
Aug 28, 10:20 AM CDTTropical Storm WatchLCHCameron6 hr
Aug 28, 10:20 AM CDTTropical Storm WarningLCHCameron, Saint Martin58 hr
Aug 28, 10:31 AM CDTRiver Flood WarningLCHAcadia, Evangeline, Saint Landry5 days
Aug 28, 10:31 AM CDTRiver Flood WarningLCHAllen7 days
Aug 28, 10:36 AM CDTSpecial Marine WarningLCH54 min
Aug 28, 11:28 AM CDTSpecial Marine WarningLCH62 min
Aug 28, 11:45 AM CDTTornado WarningLCHSaint Martin30 min
Aug 28, 12:05 PM CDTTornado WarningLCHIberia, Saint Martin, St. Mary25 min
Aug 28, 12:24 PM CDTTornado WarningLCHSaint Martin36 min
Aug 28, 12:27 PM CDTSpecial Marine WarningLCH63 min
Aug 28, 12:58 PM CDTTornado WarningLCHSaint Martin, St. Mary32 min
Aug 28, 1:02 PM CDTSpecial Marine WarningLCH13 min
Aug 28, 1:02 PM CDTTornado WarningLCHCameron28 min
Aug 28, 1:14 PM CDTSpecial Marine WarningLCH16 min
Aug 28, 1:21 PM CDTSpecial Marine WarningLCH24 min
Aug 28, 2:26 PM CDTRiver Flood WarningLCHAllen8 days
Aug 28, 2:26 PM CDTRiver Flood WarningLCHAllen11 days
Aug 28, 2:26 PM CDTRiver Flood WarningLCHCalcasieu13 days
Aug 28, 3:31 PM CDTRiver Flood WarningLCHLafayette, Saint Landry, Saint Martin3 days
Aug 28, 4:10 PM CDTSpecial Weather StatementLCHJefferson Davis65 min
Aug 28, 4:15 PM CDTStorm Surge WatchLCHCameron51 hr
Aug 28, 4:20 PM CDTTornado WarningLCHCalcasieu, Cameron, Jefferson Davis25 min
Aug 28, 4:25 PM CDTSpecial Marine WarningLCH20 min
Aug 28, 4:45 PM CDTTornado WarningLCHCameron30 min
Aug 28, 5:02 PM CDTSpecial Marine WarningLCH43 min

Nearby

Flash Flood Warnings in Louisiana, 2017Flash Flood Warnings in Texas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.