Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 61, NWS Lake Charles, LA

June 4, 20164 parishes in Louisiana

NWS Lake Charles, LA issued this flash flood warning at Jun 4, 2016, 1:42 PM CDT for 4 parishes in Louisiana. It was in force for 2 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
Jun 4, 2016, 1:42 PM CDT (18:42 UTC)
Expired
Jun 4, 2016, 3:45 PM CDT
In force
2 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, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 114 km from the middle of the area, began a volume at 18:45 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

TimeReportWhereRemark
Jun 4, 2:05 PM CDTFLASH FLOOD1 Wnw Lafayette, LAMEDIA REPORTS AMBASSADOR PKWY AT DULLES IMPASSABLE DUE TO FLOODING

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, 6.7 hours before the alert went out and 113 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 12:00Z on 2016-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1775 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2016-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.1939Sfc1 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
1775 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
450 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

Open this sounding in Storm Lab

The text

As transmitted.

968 
WGUS54 KLCH 041842
FFWLCH
LAC045-055-099-113-042045-
/O.NEW.KLCH.FF.W.0061.160604T1842Z-160604T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
142 PM CDT SAT JUN 4 2016

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN VERMILION PARISH IN SOUTHWESTERN LOUISIANA...
  NORTHWESTERN ST. MARTIN PARISH IN SOUTH CENTRAL LOUISIANA...
  NORTHWESTERN IBERIA PARISH IN SOUTH CENTRAL LOUISIANA...
  LAFAYETTE PARISH IN SOUTH CENTRAL LOUISIANA...

* UNTIL 345 PM CDT

* AT 141 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO ONE INCH OF RAIN HAS
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAFAYETTE...ABBEVILLE...SCOTT...BREAUX BRIDGE...CARENCRO...AVERY ISLAND...
  INTRACOASTAL CITY...BROUSSARD...YOUNGSVILLE...ERATH...DELCAMBRE...
  MAURICE...MEAUX...ESTHER...COTEAU...ACADIANA REGIONAL AIRPORT...RIDGE...
  HENRY...CADE 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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 2978 9219 3024 9219 3024 9218 3027 9218
      3033 9209 3036 9208 3038 9206 3036 9203
      3037 9199 3041 9198 3040 9194 3041 9186
      2982 9186 2984 9190 2981 9192 2981 9194
      2983 9197 2980 9198 2977 9206

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 4:57 AM CDTSpecial Marine WarningLCH33 min
Jun 4, 5:33 AM CDTSpecial Marine WarningLCH117 min
Jun 4, 8:00 AM CDTSpecial Marine WarningLCH2 hr
Jun 4, 9:59 AM CDTSpecial Marine WarningLCH61 min
Jun 4, 10:55 AM CDTSpecial Marine WarningLCH65 min
Jun 4, 11:00 AM CDTSpecial Weather StatementLCHAssumption45 min
Jun 4, 11:02 AM CDTFlash Flood WarningLCHCalcasieu118 min
Jun 4, 11:10 AM CDTSpecial Weather StatementLCHCalcasieu, Cameron50 min
Jun 4, 11:40 AM CDTTornado WarningLCHCalcasieu, Cameron, Jefferson Davis14 min
Jun 4, 11:56 AM CDTSpecial Marine WarningLCH64 min
Jun 4, 11:59 AM CDTSpecial Weather StatementLCHCalcasieu, Jefferson Davis, Vermilion46 min
Jun 4, 12:06 PM CDTSpecial Weather StatementLCHLafayette, Saint Martin39 min
Jun 4, 12:15 PM CDTAreal Flood AdvisoryLCHIberia, Saint Martin, St. Mary3 hr
Jun 4, 12:44 PM CDTSpecial Weather StatementLCHAcadia, Allen, Jefferson Davis, Saint Landry46 min
Jun 4, 12:55 PM CDTSpecial Marine WarningLCH2 hr
Jun 4, 1:36 PM CDTSpecial Weather StatementLCHAllen, Avoyelles, Evangeline, Rapides54 min
Jun 4, 2:45 PM CDTRiver Flood WarningLCHLafayette, Vermilion46 hr
Jun 4, 3:53 PM CDTAreal Flood AdvisoryLCHAcadia, Iberia, Jefferson Davis, Lafayette, Saint Landry, Saint Martin and 1 more3 hr

Nearby

Flash Flood Warnings in Louisiana, 2016Every 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.