Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 29, NWS Lake Charles, LA

April 20, 2016Calcasieu Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Apr 20, 2016, 2:29 PM CDT for Calcasieu Parish, Louisiana. 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 20, 2016, 2:29 PM CDT (19:29 UTC)
Expired: Apr 20, 2016, 5:30 PM CDT
In force: 3 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

County Calcasieu Parish, LA

The radar

The Lake Charles radar (KLCH), 33 km from the middle of the area, began a volume at 19:32 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
Apr 20, 3:51 PM CDT	FLASH FLOOD	5 Wnw Buhler, LA	KPLC REPORTS PORTIONS OF RT 66 ROAD NEAR DEQUINCY ARE FLOODED

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, 7.5 hours before the alert went out and 34 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: 1053 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

021 
WGUS54 KLCH 201929
FFWLCH
LAC019-202230-
/O.NEW.KLCH.FF.W.0029.160420T1929Z-160420T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
229 PM CDT WED APR 20 2016

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL CALCASIEU PARISH IN SOUTHWESTERN LOUISIANA...

* UNTIL 530 PM CDT

* AT 228 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BUHLER.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3040 9332 3030 9330 3033 9346 3042 9346
      3045 9339 3040 9339

$$

06

1 follow-up statement

300 
WGUS74 KLCH 202227
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
527 PM CDT WED APR 20 2016

LAC019-202236-
/O.EXP.KLCH.FF.W.0029.000000T0000Z-160420T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALCASIEU LA-
527 PM CDT WED APR 20 2016

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL CALCASIEU PARISH WILL
EXPIRE AT 530 PM CDT...

STORMS THAT PRODUCED THE HEAVY RAINFALL HAVE EXITED THE AREA.
FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3040 9332 3030 9330 3033 9346 3042 9346
      3045 9339 3040 9339

$$

TINGLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 4:01 AM CDT	Flash Flood Watch	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	38 hr
Apr 20, 9:41 AM CDT	Areal Flood Advisory	LCH	Calcasieu	3 hr
Apr 20, 1:26 PM CDT	Special Weather Statement	LCH	Vernon	49 min
Apr 20, 1:33 PM CDT	Special Weather Statement	LCH	Beauregard	57 min
Apr 20, 2:13 PM CDT	Flash Flood Warning	LCH	Beauregard	3 hr
Apr 20, 2:45 PM CDT	Flash Flood Warning	LCH	Allen, Jefferson Davis	3 hr
Apr 20, 2:49 PM CDT	Special Weather Statement	LCH	Calcasieu	41 min
Apr 20, 2:59 PM CDT	Special Marine Warning	LCH		61 min
Apr 20, 3:19 PM CDT	Flash Flood Warning	LCH	Calcasieu	3 hr
Apr 20, 4:24 PM CDT	Special Weather Statement	LCH	Acadia, Lafayette	66 min
Apr 20, 4:28 PM CDT	Areal Flood Advisory	LCH	Evangeline, Saint Landry	3 hr
Apr 20, 5:16 PM CDT	Areal Flood Advisory	LCH	Acadia, Lafayette, Saint Landry, Saint Martin	4 hr
Apr 20, 5:32 PM CDT	Special Weather Statement	LCH	Lafayette, Saint Martin	43 min
Apr 20, 5:52 PM CDT	Flash Flood Warning	LCH	Lafayette, Saint Martin	3 hr

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.