Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 66, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Sep 30, 2021, 12:53 PM CDT for 4 parishes in 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
- Sep 30, 2021, 12:53 PM CDT (17:53 UTC)
- Expired
- Sep 30, 2021, 4:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Acadia Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA
The radar
The Lake Charles radar (KLCH), 39 km from the middle of the area, began a volume at 17:54 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, 5.9 hours before the alert went out and 37 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
- 1518 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 633 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted.
490
WGUS54 KLCH 301753
FFWLCH
LAC001-019-023-053-302100-
/O.NEW.KLCH.FF.W.0066.210930T1753Z-210930T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
1253 PM CDT Thu Sep 30 2021
The National Weather Service in Lake Charles has issued a
* Flash Flood Warning for...
West Central Acadia Parish in southwestern Louisiana...
Southeastern Calcasieu Parish in southwestern Louisiana...
North Central Cameron Parish in southwestern Louisiana...
Central Jefferson Davis Parish in southwestern Louisiana...
* Until 400 PM CDT.
* At 1253 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 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...
Jennings, Welsh, Elton, Hayes, Lacassine National Wildlife Refuge,
Pine Island, Hacketts Corner, Gibbstown, Sweet Lake, Lacassine,
Bell City, Roanoke and Hathaway.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3017 9304 3034 9288 3044 9280 3044 9278
3049 9277 3049 9270 3047 9262 3037 9256
3033 9259 3019 9274 2990 9297 2987 9315
2996 9320
FLASH FLOOD...RADAR INDICATED
$$
K. KuyperThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 7:37 PM CDT | River Flood Warning | LCH | Beauregard, Calcasieu | 4 days |
| Sep 30, 9:08 AM CDT | Flash Flood Warning | LCH | Allen, Avoyelles, Evangeline, Rapides | 3 hr |
| Sep 30, 1:14 PM CDT | Special Weather Statement | LCH | Vermilion | 31 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.