Alert archive / Louisiana / Flash Flood Warnings in 2021

Flash Flood Warning 50, NWS Lake Charles, LA

September 6, 2021Avoyelles Parish, Rapides Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Sep 6, 2021, 6:12 AM CDT for Avoyelles Parish, Rapides Parish, Louisiana. It was in force for 4 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: Sep 6, 2021, 6:12 AM CDT (11:12 UTC)
Expired: Sep 6, 2021, 10:15 AM CDT
In force: 4 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

Counties Avoyelles Parish, LA, Rapides Parish, LA

What was reported inside it

Time	Report	Where	Remark
Sep 6, 9:01 AM CDT	FLASH FLOOD	4 Ese Echo, LA	HIGHWAY TEMPORARILY CLOSED FOR A TIME.

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, 11.2 hours before the alert went out and 151 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3514 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

638 
WGUS54 KLCH 061112
FFWLCH
LAC009-079-061515-
/O.NEW.KLCH.FF.W.0050.210906T1112Z-210906T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
612 AM CDT Mon Sep 6 2021

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Western Avoyelles Parish in central Louisiana...
  Eastern Rapides Parish in central Louisiana...

* Until 1015 AM CDT.

* At 612 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Alexandria, Pineville, Marksville, Bunkie, Effie, Alexandria 
  International Airport, Ball, Cottonport, Mansura, Hessmer, 
  Evergreen, Centerpoint, Deville, Holloway, Libuse, Esler Regional 
  Airport, Brouillette, Kingsville, Paradise and Tioga.

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.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3125 9224 3129 9230 3127 9251 3134 9258
      3138 9258 3143 9240 3143 9223 3139 9214
      3131 9208 3127 9202 3120 9201 3106 9204
      3087 9211 3085 9210 3085 9216 3091 9221

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 2 HOURS

$$

Landreneau

1 follow-up statement

855 
WGUS74 KLCH 061218
FFSLCH

Flash Flood Statement
National Weather Service Lake Charles LA
718 AM CDT Mon Sep 6 2021

LAC009-079-061515-
/O.CON.KLCH.FF.W.0050.000000T0000Z-210906T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Avoyelles LA-Rapides LA-
718 AM CDT Mon Sep 6 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT THIS 
MORNING FOR WESTERN AVOYELLES AND EASTERN RAPIDES PARISHES...

At 718 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 4 inches of rain have 
fallen. Additional rainfall amounts of 1 to 2 inches are possible in 
the warned area. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Alexandria, Pineville, Marksville, Bunkie, Effie, Alexandria 
  International Airport, Ball, Cottonport, Mansura, Hessmer, 
  Evergreen, Centerpoint, Deville, Holloway, Libuse, Esler Regional 
  Airport, Brouillette, Kingsville, Paradise and Tioga.

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.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3125 9224 3129 9230 3127 9251 3134 9258
      3138 9258 3143 9240 3143 9223 3139 9214
      3131 9208 3127 9202 3120 9201 3106 9204
      3087 9211 3085 9210 3085 9216 3091 9221

FLASH FLOOD...RADAR INDICATED

$$

Landreneau

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 5, 9:20 PM CDT	Special Weather Statement	LCH	Rapides	25 min
Sep 5, 9:47 PM CDT	Special Weather Statement	LCH	Rapides	28 min
Sep 5, 11:34 PM CDT	Special Weather Statement	LCH	Allen, Evangeline	41 min
Sep 6, 4:52 AM CDT	Special Weather Statement	LCH	Avoyelles	53 min
Sep 6, 5:52 AM CDT	Special Weather Statement	LCH	Avoyelles	83 min
Sep 6, 7:47 AM CDT	Special Weather Statement	LCH	Allen, Beauregard, Calcasieu	58 min
Sep 6, 8:44 AM CDT	Flash Flood Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis	5 hr
Sep 6, 8:53 AM CDT	Special Weather Statement	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis	67 min
Sep 6, 8:58 AM CDT	Special Weather Statement	LCH	Vermilion	62 min
Sep 6, 9:01 AM CDT	Special Marine Warning	LCH		59 min
Sep 6, 9:16 AM CDT	Special Marine Warning	LCH		44 min
Sep 6, 10:06 AM CDT	Special Marine Warning	LCH		54 min
Sep 6, 10:10 AM CDT	Special Weather Statement	LCH	Cameron, Vermilion	65 min
Sep 6, 10:17 AM CDT	Special Marine Warning	LCH		28 min
Sep 6, 10:58 AM CDT	Special Weather Statement	LCH	Cameron	47 min

Nearby

Flash Flood Warnings in Louisiana, 2021 Every flash flood warning in 2021

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.