Alert archive / Louisiana / Flash Flood Warnings in 2017
Flash Flood Warning 82, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Aug 30, 2017, 4:18 AM CDT for Calcasieu Parish, Cameron Parish, Louisiana. It was in force for 5 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 30, 2017, 4:18 AM CDT (09:18 UTC)
- Expired
- Aug 30, 2017, 9:15 AM CDT
- In force
- 5 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Calcasieu Parish, LA, Cameron Parish, LA
The radar
The Lake Charles radar (KLCH), 48 km from the middle of the area, began a volume at 09:16 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, 9.3 hours before the alert went out and 50 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
- 888 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 667 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.6
The text
As transmitted.
347
WGUS54 KLCH 300918
FFWLCH
LAC019-023-301415-
/O.NEW.KLCH.FF.W.0082.170830T0918Z-170830T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
418 AM CDT WED AUG 30 2017
The National Weather Service in Lake Charles has issued a
* Flash Flood Warning for...
Northwestern Cameron Parish in southwestern Louisiana...
Southwestern Calcasieu Parish in southwestern Louisiana...
* Until 915 AM CDT
* At 416 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is expected to
begin shortly.
* Some locations that will experience flooding include...
Vinton, Starks and Lunita.
Rainfall rates of one to three inches per hour are possible in the
warned area with additional rainfall amounts of two to five inches.
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.
&&
LAT...LON 2998 9378 3006 9372 3006 9370 3008 9372
3014 9370 3014 9369 3015 9371 3017 9370
3021 9372 3023 9371 3029 9371 3030 9374
3033 9376 3036 9375 3039 9376 3040 9374
3040 9360 2998 9351 2996 9376
$$
RuaThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 7:09 PM CDT | Flash Flood Warning | LCH | Calcasieu, Cameron | 3 hr |
| Aug 29, 7:13 PM CDT | Special Marine Warning | LCH | 32 min | |
| Aug 29, 7:24 PM CDT | Flash Flood Warning | LCH | Beauregard, Vernon | 6 hr |
| Aug 29, 7:42 PM CDT | Special Marine Warning | LCH | 33 min | |
| Aug 29, 10:22 PM CDT | Flash Flood Warning | LCH | Beauregard, Vernon | 11 hr |
| Aug 29, 11:29 PM CDT | Wind Advisory | LCH | Allen, Avoyelles, Beauregard, Evangeline, Lafayette, Rapides and 3 more | 20 hr |
| Aug 30, 8:20 AM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu, Vernon | 12 hr |
Nearby
Flash Flood Warnings in Louisiana, 2017Every flash flood warning in 2017
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.