Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 38, NWS Lake Charles, LA

May 1, 20166 parishes in Louisiana

NWS Lake Charles, LA issued this flash flood warning at May 1, 2016, 7:32 AM CDT for 6 parishes in Louisiana. It was in force for 4 hr. 8 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: May 1, 2016, 7:32 AM CDT (12:32 UTC)
Expired: May 1, 2016, 11:30 AM CDT
In force: 4 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

Counties Acadia Parish, LA, Calcasieu Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA

The radar

The Lake Charles radar (KLCH), 95 km from the middle of the area, began a volume at 12:35 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

Time	Report	Where	Remark
May 1, 8:42 AM CDT	FLASH FLOOD	Grand Coteau, LA	KLAF REPORTS THAT CARS ARE SUBMERGED ALONG I-49 BETWEEN GRAND COTEAU AND LAFAYETTE AND RESCUE OPERATIONS ARE UNDERWAY.
May 1, 9:00 AM CDT	HEAVY RAIN 5.44	5 Sw Arnaudville, LA	MESONET STATION BAYOU VERMILION /BVCL1/
May 1, 9:45 AM CDT	FLASH FLOOD	Lafayette, LA	AMBASSADOR CAFFERY AT DULLES IS FLOODED
May 1, 9:49 AM CDT	FLASH FLOOD	Carencro, LA	FLOOD WATERS GETTING INTO HOMES IN CARENCRO.
May 1, 10:00 AM CDT	FLASH FLOOD	2 Sse Scott, LA	PICTURE OF AMBASSADOR CAFFERY AT DULLES FLOODED.
May 1, 10:17 AM CDT	FLASH FLOOD	3 Sse Sunset, LA	LA 182 IS NOW CLOSED DUE TO HIGH WATER.
May 1, 10:19 AM CDT	FLASH FLOOD	Cankton, LA	LA 93 HAS FLOOD WATERS ON IT NEAR CANKTON.
May 1, 11:36 AM CDT	FLASH FLOOD	1 Ene Cankton, LA	PICTURE OF SIGNIFCANT FLOODING ON DOMENGEAUX RD. NEAR CANKTON

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, 0.5 hours before the alert went out and 94 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: 324 J/kg
Mixed-layer CIN: -161 J/kg
Mixed-layer LCL: 893 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted.

204 
WGUS54 KLCH 011232
FFWLCH
LAC001-019-053-055-097-099-011630-
/O.NEW.KLCH.FF.W.0038.160501T1232Z-160501T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
732 AM CDT SUN MAY 1 2016

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN ST. MARTIN PARISH IN SOUTH CENTRAL LOUISIANA...
  JEFFERSON DAVIS PARISH IN SOUTHWESTERN LOUISIANA...
  SOUTHERN ST. LANDRY PARISH IN CENTRAL LOUISIANA...
  SOUTHEASTERN CALCASIEU PARISH IN SOUTHWESTERN LOUISIANA...
  ACADIA PARISH IN SOUTHWESTERN LOUISIANA...
  LAFAYETTE PARISH IN SOUTH CENTRAL LOUISIANA...

* UNTIL 1130 AM CDT

* AT 730 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. TWO TO SIX INCHES OF RAIN HAVE
  FALLEN...AND AN ADDITIONAL 2 TO 4 INCHES OF RAIN IS POSSIBLE
  ACROSS OVER THE NEXT FEW HOURS. SOME PUBLIC REPORTS INDICATE WATER
  IS COVERING ROADWAYS AND APPROACHING HOMES. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAFAYETTE...OPELOUSAS...CROWLEY...CATAHOULA...EUNICE...JENNINGS...SCOTT...
  BREAUX BRIDGE...RAYNE...CARENCRO...ST. MARTINVILLE...CHURCH POINT...
  WELSH...IOWA...LAKE ARTHUR...IOTA...KROTZ SPRINGS...LEONVILLE...
  ARNAUDVILLE AND MERMENTAU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3016 9152 3012 9209 3013 9209 3015 9229
      3009 9234 3008 9251 3012 9256 3007 9264
      3004 9299 3044 9300 3044 9278 3046 9277
      3057 9176 3051 9173 3050 9175 3049 9170

$$

24

1 follow-up statement

240 
WGUS74 KLCH 011533
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1033 AM CDT SUN MAY 1 2016

LAC001-019-053-055-097-099-011630-
/O.CON.KLCH.FF.W.0038.000000T0000Z-160501T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. MARTIN LA-JEFFERSON DAVIS LA-ST. LANDRY LA-CALCASIEU LA-
ACADIA LA-LAFAYETTE LA-
1033 AM CDT SUN MAY 1 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 AM CDT FOR
NORTHWESTERN ST. MARTIN...JEFFERSON DAVIS...SOUTHERN ST. LANDRY...
SOUTHEASTERN CALCASIEU...ACADIA AND LAFAYETTE PARISHES...

AT 1027 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. ANYWHERE FROM 3 TO 9 INCHES OF
RAIN HAVE FALLEN SINCE MIDNIGHT. FLASH FLOODING IS OCCURRING.
NUMEROUS REPORTS OF MAJOR ROADS CLOSED INCLUDING I-49 AND SERVICE
ROADS...LA 182...AND MANY PARISH ROADS TOO NUMEROUS TO MENTION HERE.
SEVERAL REPORTS OF WATER IN HOMES AS WELL. 

SHOWERS AND THUNDERSTORMS CONTINUE TO TRAIN FROM WEST TO EAST OVER
THE WARNED AREA...AND ADDITIONAL RAINFALL OF 2 TO 4 INCHES IS
POSSIBLE THE NEXT SEVERAL HOURS...OR UNTIL THIS SYSTEM SHIFTS
FURTHER SOUTH OR DISSIPATES LATER THIS AFTERNOON OR EVENING. THE
FLASH FLOOD WARNING WILL LIKELY HAVE TO BE EXTENDED INTO THE
AFTERNOON HOURS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LAFAYETTE...OPELOUSAS...CROWLEY...CATAHOULA...EUNICE...JENNINGS...SCOTT...
BREAUX BRIDGE...RAYNE...CARENCRO...ST. MARTINVILLE...CHURCH POINT...WELSH...
IOWA...LAKE ARTHUR...IOTA...KROTZ SPRINGS...LEONVILLE...ARNAUDVILLE AND
MERMENTAU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3016 9152 3012 9209 3013 9209 3015 9229
      3009 9234 3008 9251 3012 9256 3007 9264
      3004 9299 3044 9300 3044 9278 3046 9277
      3057 9176 3051 9173 3050 9175 3049 9170

$$

LANDRENEAU

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 3:07 AM CDT	Special Weather Statement	LCH	Acadia	38 min
May 1, 3:16 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Lafayette, Saint Landry	44 min
May 1, 3:34 AM CDT	Tornado Warning	LCH	Acadia, Lafayette	26 min
May 1, 3:58 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Lafayette, Saint Landry	62 min
May 1, 4:09 AM CDT	Special Weather Statement	LCH	Calcasieu	66 min
May 1, 4:36 AM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	39 min
May 1, 4:59 AM CDT	Severe Thunderstorm Warning	LCH	Lafayette, Saint Landry, Saint Martin	61 min
May 1, 5:01 AM CDT	Special Weather Statement	LCH	Allen	59 min
May 1, 5:14 AM CDT	Special Weather Statement	LCH	Calcasieu	61 min
May 1, 5:19 AM CDT	Coastal Flood Advisory	LCH	Cameron	12 hr
May 1, 5:44 AM CDT	Areal Flood Advisory	LCH	Calcasieu	3 hr
May 1, 5:51 AM CDT	Severe Thunderstorm Warning	LCH	Saint Landry, Saint Martin	39 min
May 1, 5:56 AM CDT	Special Weather Statement	LCH	Vernon	49 min
May 1, 6:09 AM CDT	Special Weather Statement	LCH	Calcasieu	51 min
May 1, 6:32 AM CDT	Special Weather Statement	LCH	Saint Martin	28 min
May 1, 6:57 AM CDT	Special Weather Statement	LCH	Jefferson Davis	48 min
May 1, 7:10 AM CDT	Areal Flood Advisory	LCH	Acadia, Jefferson Davis	3 hr
May 1, 7:23 AM CDT	Areal Flood Advisory	LCH	Acadia, Lafayette, Saint Landry, Saint Martin	3 hr
May 1, 7:58 AM CDT	Special Weather Statement	LCH	Lafayette	62 min
May 1, 8:02 AM CDT	Areal Flood Advisory	LCH	Calcasieu	118 min
May 1, 8:11 AM CDT	River Flood Warning	LCH	Lafayette, Saint Landry, Saint Martin	4 days
May 1, 8:11 AM CDT	River Flood Warning	LCH	Lafayette, Vermilion	11 days
May 1, 8:34 AM CDT	Flash Flood Warning	LCH	Beauregard, Calcasieu, Jefferson Davis	3 hr
May 1, 9:41 AM CDT	River Flood Warning	LCH	Allen, Jefferson Davis	49 hr
May 1, 9:41 AM CDT	River Flood Warning	LCH	Calcasieu	6 days
May 1, 10:14 AM CDT	Special Weather Statement	LCH	Cameron, Iberia, St. Mary, Vermilion	91 min
May 1, 10:57 AM CDT	Flash Flood Warning	LCH	Acadia, Iberia, Lafayette, Saint Landry, Saint Martin, St. Mary and 1 more	11 hr
May 1, 11:05 AM CDT	Flash Flood Warning	LCH	Calcasieu, Cameron, Jefferson Davis	11 hr
May 1, 3:23 PM CDT	Special Marine Warning	LCH		2 hr
May 1, 4:40 PM CDT	Special Marine Warning	LCH		35 min
May 1, 4:57 PM CDT	Special Weather Statement	LCH	Jefferson Davis	48 min

Nearby

Flash Flood Warnings in Louisiana, 2016 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.