Alert archive / Louisiana / Flash Flood Warnings in 2021

Flash Flood Warning 35, NWS Lake Charles, LA

June 6, 2021Beauregard Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Jun 6, 2021, 7:39 AM CDT for Beauregard Parish, Louisiana. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 6, 2021, 7:39 AM CDT (12:39 UTC)
Expired
Jun 6, 2021, 10:45 AM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

County Beauregard Parish, LA

The radar

The Lake Charles radar (KLCH), 59 km from the middle of the area, began a volume at 12:41 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.7 hours before the alert went out and 60 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 2021-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1676 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2021-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.19395878Sfc1 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
1676 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.2

Open this sounding in Storm Lab

The text

As transmitted.

977 
WGUS54 KLCH 061239
FFWLCH
LAC011-061545-
/O.NEW.KLCH.FF.W.0035.210606T1239Z-210606T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
739 AM CDT Sun Jun 6 2021

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Western Beauregard Parish in southwestern Louisiana...

* Until 1045 AM CDT.

* At 739 AM 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...
  Fields, Singer, Bivens, Oretta and Bancroft.

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.

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, country roads, farmland, and other low lying 
spots.

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 3078 9339 3076 9332 3065 9332 3054 9338
      3049 9344 3049 9349 3045 9349 3041 9354
      3041 9371 3043 9371 3044 9370 3045 9371
      3048 9372 3051 9371 3052 9371 3052 9372
      3059 9371 3059 9368 3061 9369 3066 9367

FLASH FLOOD...RADAR INDICATED

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 5:45 AM CDTSpecial Weather StatementLCHBeauregard60 min
Jun 6, 6:16 AM CDTSpecial Weather StatementLCHCalcasieu, Cameron89 min
Jun 6, 7:04 AM CDTSpecial Weather StatementLCHBeauregard71 min
Jun 6, 7:53 AM CDTSpecial Weather StatementLCHCalcasieu, Cameron82 min
Jun 6, 8:21 AM CDTSpecial Weather StatementLCHBeauregard, Vernon54 min
Jun 6, 9:00 AM CDTSpecial Weather StatementLCHJefferson Davis45 min
Jun 6, 9:18 AM CDTTornado WarningLCHCameron27 min
Jun 6, 10:27 AM CDTSpecial Weather StatementLCHAcadia48 min
Jun 6, 11:00 AM CDTSpecial Weather StatementLCHSaint Landry45 min
Jun 6, 11:45 AM CDTSpecial Weather StatementLCHSaint Landry45 min

Nearby

Flash Flood Warnings in Louisiana, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.