Alert archive / Louisiana / Flash Flood Warnings in 2021

Flash Flood Warning 5, NWS Lake Charles, LA

April 13, 20215 parishes in Louisiana

NWS Lake Charles, LA issued this flash flood warning at Apr 13, 2021, 12:53 PM CDT for 5 parishes in Louisiana. It was in force for 6 hr. 11 reports 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 13, 2021, 12:53 PM CDT (17:53 UTC)
Expired: Apr 13, 2021, 7:00 PM CDT
In force: 6 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

Counties Iberia Parish, LA, Lafayette Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA

What was reported inside it

Time	Report	Where	Remark
Apr 13, 1:10 PM CDT	HEAVY RAIN 3.84	1 Ene Abbeville, LA	A PERSONAL WEATHER SITE NEAR ABBEVILLE HAS REPORTED 3.84 INCHES OF RAINFALL SINCE 1130 AM LOCAL.
Apr 13, 1:10 PM CDT	HEAVY RAIN 5.11	1 Wnw Abbeville, LA	A PERSONAL WEATHER SITE NEAR ABBEVILLE HAS RECORDED 5.11 INCHES OF RAINFALL SINCE 1130 AM LOCAL.
Apr 13, 1:20 PM CDT	HEAVY RAIN 4.01	4 S Youngsville, LA	A PERSONAL WEATHER SITE NEAR YOUNGSVILLE HAS REPORTED 4.01 INCHES OF RAINFALL SINCE AROUND 1130 AM LOCAL.
Apr 13, 1:50 PM CDT	HEAVY RAIN 4.16	1 Sw Coteau, LA	A PERSONAL WEATHER SITE HAS MEASURED 4.16 INCHES OF RAIN IN THE PAST COUPLE OF HOURS.
Apr 13, 2:00 PM CDT	HEAVY RAIN 4.13	4 Wnw New Iberia, LA	THE ASOS AT ACADIANA REGIONAL AIRPORT HAS RECORDED 4.13 INCHES OR RAINFALL IN THE PAST COUPLE OF HOURS.
Apr 13, 2:35 PM CDT	HEAVY RAIN 5.31	2 N New Iberia, LA	A PERSONAL WEATHER SITE NEAR NEW IBERIA HAS RECORDED 5.31 INCHES OF RAINFALL SINCE NOON LOCAL.
Apr 13, 2:39 PM CDT	HEAVY RAIN 5.33	1 Ese Jeanerette, LA	A PERSONAL WEATHER SITE NEAR JEANERETTE HAS RECORDED 5.33 INCHES OF RAINFALL SINCE AROUND NOON LOCAL.
Apr 13, 3:14 PM CDT	FLASH FLOOD	3 Nw New Iberia, LA	HIGH WATER REPORTED ON ADMIRAL DOYLE ROAD. CARS ARE TURNING AROUND, ROAD IMPASSABLE.
Apr 13, 3:27 PM CDT	FLASH FLOOD	1 S New Iberia, LA	ADMIRAL DOYLE AND LEWIS STREET IS CLOSED DUE TO HIGH WATER.
Apr 13, 3:33 PM CDT	HEAVY RAIN 6.45	1 Ese Jeanerette, LA	A PERSONAL WEATHER SITE NEAR JEANERETTE HAS RECORDED 6.45 INCHES OF RAINFALL SINCE AROUND NOON LOCAL.
Apr 13, 3:50 PM CDT	FLASH FLOOD	1 Sw Coteau, LA	FREETOWN ROAD IS REPORTED UNDERWATER.

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 12:00Z, 5.9 hours before the alert went out and 156 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: 2326 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 457 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

As transmitted.

230 
WGUS54 KLCH 131753
FFWLCH
LAC045-055-099-101-113-132145-
/O.NEW.KLCH.FF.W.0005.210413T1753Z-210413T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
1253 PM CDT Tue Apr 13 2021

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Iberia Parish in south central Louisiana...
  Southeastern Lafayette Parish in south central Louisiana...
  West Central St. Martin Parish in south central Louisiana...
  North Central St. Mary Parish in south central Louisiana...
  Northeastern Vermilion Parish in southwestern Louisiana...

* Until 445 PM CDT.

* At 1253 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Lafayette, New Iberia, Abbeville, Catahoula, St. Martinville, 
  Jeanerette, Kaplan, Avery Island, Intracoastal City, Broussard, 
  Youngsville, Erath, Delcambre, Maurice, Loreauville, Acadiana 
  Regional Airport, Coteau, Cade, Lydia and Jefferson Island.

Additional rainfall amounts of 2 to 4 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2977 9222 2978 9229 3009 9231 3026 9159
      3023 9148 3020 9149 3019 9147 3010 9146
      3010 9139 3006 9137 3006 9127 3003 9122
      3000 9124 3000 9126 2998 9126 2995 9143
      2990 9159

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR 

$$

Rua

3 follow-up statements

897 
WGUS74 KLCH 131909
FFSLCH

Flash Flood Statement
National Weather Service Lake Charles LA
209 PM CDT Tue Apr 13 2021

LAC045-055-099-101-113-132145-
/O.CON.KLCH.FF.W.0005.000000T0000Z-210413T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Iberia LA-Lafayette LA-St. Martin LA-St. Mary LA-Vermilion LA-
209 PM CDT Tue Apr 13 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM CDT THIS 
AFTERNOON FOR IBERIA, SOUTHEASTERN LAFAYETTE, WEST CENTRAL ST. 
MARTIN, NORTH CENTRAL ST. MARY AND NORTHEASTERN VERMILION PARISHES...

At 209 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 6 inches of rain have 
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Doppler radar.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Lafayette, New Iberia, Abbeville, Catahoula, St. Martinville, 
  Jeanerette, Kaplan, Avery Island, Intracoastal City, Broussard, 
  Youngsville, Erath, Delcambre, Maurice, Loreauville, Acadiana 
  Regional Airport, Coteau, Cade, Lydia and Jefferson Island.

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2977 9222 2978 9229 3009 9231 3026 9159
      3023 9148 3020 9149 3019 9147 3010 9146
      3010 9139 3006 9137 3006 9127 3003 9122
      3000 9124 3000 9126 2998 9126 2995 9143
      2990 9159

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR 

$$

Rua

063 
WGUS54 KLCH 132040
FFWLCH
LAC045-055-099-101-113-132230-
/O.EXT.KLCH.FF.W.0005.000000T0000Z-210413T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
340 PM CDT Tue Apr 13 2021

The National Weather Service in Lake Charles has extended the

* Flash Flood Warning for...
  Iberia Parish in south central Louisiana...
  Southeastern Lafayette Parish in south central Louisiana...
  West Central St. Martin Parish in south central Louisiana...
  North Central St. Mary Parish in south central Louisiana...
  Northeastern Vermilion Parish in southwestern Louisiana...

* Until 530 PM CDT.

* At 340 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 7 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Lafayette, New Iberia, Abbeville, Catahoula, St. Martinville, 
  Jeanerette, Kaplan, Avery Island, Intracoastal City, Broussard, 
  Youngsville, Erath, Delcambre, Maurice, Loreauville, Acadiana 
  Regional Airport, Coteau, Cade, Lydia and Jefferson Island.

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2977 9222 2978 9229 3009 9231 3026 9159
      3023 9148 3020 9149 3019 9147 3010 9146
      3010 9139 3006 9137 3006 9127 3003 9122
      3000 9124 3000 9126 2998 9126 2995 9143
      2990 9159

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR 

$$

Rua

002 
WGUS54 KLCH 132207
FFWLCH
LAC045-055-099-101-113-140000-
/O.EXT.KLCH.FF.W.0005.000000T0000Z-210414T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
507 PM CDT Tue Apr 13 2021

The National Weather Service in Lake Charles has extended the

* Flash Flood Warning for...
  Iberia Parish in south central Louisiana...
  Southeastern Lafayette Parish in south central Louisiana...
  West Central St. Martin Parish in south central Louisiana...
  North Central St. Mary Parish in south central Louisiana...
  Northeastern Vermilion Parish in southwestern Louisiana...

* Until 700 PM CDT.

* At 507 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 4 and 7 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Lafayette, New Iberia, Abbeville, Catahoula, St. Martinville, 
  Jeanerette, Kaplan, Avery Island, Intracoastal City, Broussard, 
  Youngsville, Erath, Delcambre, Maurice, Loreauville, Acadiana 
  Regional Airport, Coteau, Cade, Lydia and Jefferson Island.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2977 9222 2978 9229 3009 9231 3026 9159
      3023 9148 3020 9149 3019 9147 3010 9146
      3010 9139 3006 9137 3006 9127 3003 9122
      3000 9124 3000 9126 2998 9126 2995 9143
      2990 9159

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 2 HOURS 

$$

Warthen

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 6:47 AM CDT	Special Weather Statement	LCH	Beauregard	43 min
Apr 13, 7:07 AM CDT	Special Weather Statement	LCH	Allen	38 min
Apr 13, 7:26 AM CDT	Special Weather Statement	LCH	Allen, Beauregard, Evangeline, Vernon	49 min
Apr 13, 8:29 AM CDT	Special Weather Statement	LCH	Evangeline	61 min
Apr 13, 9:10 AM CDT	Special Weather Statement	LCH	Saint Landry	50 min
Apr 13, 10:56 AM CDT	Special Weather Statement	LCH	Acadia	49 min
Apr 13, 11:46 AM CDT	Special Weather Statement	LCH	Lafayette, Saint Martin	44 min
Apr 13, 12:33 PM CDT	Special Weather Statement	LCH	Saint Martin	57 min
Apr 13, 1:09 PM CDT	River Flood Warning	LCH	Lafayette, Saint Martin, Vermilion	18 hr
Apr 13, 1:33 PM CDT	Special Weather Statement	LCH	Saint Martin	57 min
Apr 13, 2:24 PM CDT	Special Weather Statement	LCH	Saint Martin	51 min
Apr 13, 2:47 PM CDT	Flash Flood Warning	LCH	Iberia, Saint Martin, St. Mary	4 hr
Apr 13, 2:55 PM CDT	Special Weather Statement	LCH	St. Mary	65 min
Apr 13, 3:31 PM CDT	Flash Flood Watch	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	4 days
Apr 13, 4:33 PM CDT	Special Marine Warning	LCH		27 min
Apr 13, 5:16 PM CDT	Special Marine Warning	LCH		59 min
Apr 13, 5:20 PM CDT	Special Weather Statement	LCH	Lafayette	40 min
Apr 13, 6:49 PM CDT	Special Weather Statement	LCH	Assumption	41 min
Apr 13, 6:53 PM CDT	Special Marine Warning	LCH		67 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.