Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 48, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Aug 31, 2021, 5:48 PM CDT for Calcasieu Parish, Louisiana. It was in force for 2 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
- Aug 31, 2021, 5:48 PM CDT (22:48 UTC)
- Expired
- Aug 31, 2021, 8:11 PM CDT
- In force
- 2 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), 5 km from the middle of the area, began a volume at 22:49 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, 10.8 hours before the alert went out and 6 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.
- Mixed-layer CAPE
- 2197 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
100
WGUS54 KLCH 312248
FFWLCH
LAC019-010200-
/O.NEW.KLCH.FF.W.0048.210831T2248Z-210901T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
548 PM CDT Tue Aug 31 2021
The National Weather Service in Lake Charles has issued a
* Flash Flood Warning for...
Southeastern Calcasieu Parish in southwestern Louisiana...
* Until 900 PM CDT.
* At 548 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1
hour. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Lake Charles, Sulphur, Westlake, Lake Charles Regional Airport,
Holmwood and Carlyss.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3009 9308 3009 9314 3012 9326 3015 9331
3016 9333 3020 9335 3021 9336 3023 9335
3025 9333 3026 9329 3024 9326 3021 9321
3017 9310 3014 9308 3010 9306
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Landreneau2 follow-up statements
786
WGUS74 KLCH 010027
FFSLCH
Flash Flood Statement
National Weather Service Lake Charles LA
727 PM CDT Tue Aug 31 2021
LAC019-010200-
/O.CON.KLCH.FF.W.0048.000000T0000Z-210901T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calcasieu LA-
727 PM CDT Tue Aug 31 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR SOUTHEASTERN CALCASIEU PARISH...
At 727 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area has ended. Between 3 and 4 inches of
rain have fallen, and the run-off rain water will continue for the
next hour.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Lake Charles, Sulphur, Westlake, Lake Charles Regional Airport,
Holmwood and Carlyss.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3009 9308 3009 9314 3012 9326 3015 9331
3016 9333 3020 9335 3021 9336 3023 9335
3025 9333 3026 9329 3024 9326 3021 9321
3017 9310 3014 9308 3010 9306
FLASH FLOOD...RADAR INDICATED
$$
Landreneau706
WGUS74 KLCH 010111
FFSLCH
Flash Flood Statement
National Weather Service Lake Charles LA
811 PM CDT Tue Aug 31 2021
LAC019-010121-
/O.CAN.KLCH.FF.W.0048.000000T0000Z-210901T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calcasieu LA-
811 PM CDT Tue Aug 31 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN CALCASIEU
PARISH...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 3009 9308 3009 9314 3012 9326 3015 9331
3016 9333 3020 9335 3021 9336 3023 9335
3025 9333 3026 9329 3024 9326 3021 9321
3017 9310 3014 9308 3010 9306
$$
LandreneauThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 3:53 PM CDT | Special Weather Statement | LCH | Jefferson Davis | 22 min |
| Aug 31, 4:34 PM CDT | Special Weather Statement | LCH | Acadia, Jefferson Davis, Lafayette, Saint Martin | 56 min |
| Aug 31, 5:00 PM CDT | Flash Flood Warning | LCH | Lafayette | 3 hr |
| Aug 31, 5:27 PM CDT | Special Weather Statement | LCH | Calcasieu | 48 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.