Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 32, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at May 20, 2021, 7:12 PM CDT for Allen Parish, Beauregard Parish, Vernon 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
- May 20, 2021, 7:12 PM CDT (00:12 UTC)
- Expired
- May 20, 2021, 10:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Allen Parish, LA, Beauregard Parish, LA, Vernon Parish, LA
The radar
The Ft Polk radar (KPOE), 32 km from the middle of the area, began a volume at 00:12 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 00:00Z, 0.2 hours before the alert went out and 88 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
- 3 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
459
WGUS54 KLCH 210012
FFWLCH
LAC003-011-115-210315-
/O.NEW.KLCH.FF.W.0032.210521T0012Z-210521T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
712 PM CDT Thu May 20 2021
The National Weather Service in Lake Charles has issued a
* Flash Flood Warning for...
Central Allen Parish in southwestern Louisiana...
Eastern Beauregard Parish in southwestern Louisiana...
Central Vernon Parish in west central Louisiana...
* Until 1015 PM CDT.
* At 712 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 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...
De Ridder, Leesville, Kinder, Oberlin, Rosepine, Reeves,
Sugartown, Pitkin, Dry Creek, Mittie, Fort Polk, Slagle, Grant,
New Llano, Cravens, Fullerton, Tulla, Harmony, Leblanc and Bundick
Lake.
Additional rainfall amounts of 2 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.
&&
LAT...LON 3098 9333 3105 9333 3113 9335 3125 9331
3126 9325 3128 9322 3129 9314 3125 9309
3051 9271 3052 9279 3049 9290 3048 9315
3052 9314 3067 9323
FLASH FLOOD...RADAR INDICATED
$$
06The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 4:04 AM CDT | Coastal Flood Advisory | LCH | Cameron | 5 days |
| May 21, 1:38 PM CDT | Special Weather Statement | LCH | Vermilion | 52 min |
| May 21, 2:29 PM CDT | Special Weather Statement | LCH | Jefferson Davis | 46 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.