Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 24, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Mar 20, 2012, 6:05 PM CDT for 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
- Mar 20, 2012, 6:05 PM CDT (23:05 UTC)
- Expired
- Mar 20, 2012, 9:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Flood severity
- None
County Vernon Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.1 hours before the alert went out and 132 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
- 1368 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 338 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 8.8
The text
As transmitted, in the capitals the NWS used until 2016.
457
WGUS54 KLCH 202305
FFWLCH
LAC115-210200-
/O.NEW.KLCH.FF.W.0024.120320T2305Z-120321T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
605 PM CDT TUE MAR 20 2012
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN VERNON PARISH IN WEST CENTRAL LOUISIANA...
* UNTIL 900 PM CDT
* AT 600 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR ESTIMATES RAINFALL AMOUNTS OF 2 TO 3 INCHES
HAVE FALLEN OVER THE PAST 3 HOURS...WITH 3 TO 6 INCHES ESTIMATED
OVER THE PAST 6 HOURS. HEAVY SHOWERS AND THUNDERSTORMS CONTINUE TO
MOVE ACROSS THE AREA AND AN ADDITIONAL 2 INCHES OF RAINFALL IS
POSSIBLE THROUGH 8 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ANACOCO...SLAGLE...HORNBECK...HUTTON AND KURTHWOOD.
SOME STREAMS AND CREEKS THAT ARE LIKELY TO FLOOD ARE THE HEADWATERS
OF THE CALCASIEU RIVER...INDIAN CREEK...PRARIE CREEK AND COMRADE
CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3136 9299 3134 9298 3132 9289 3112 9299
3126 9351 3129 9350 3129 9344 3137 9339
3137 9303
$$The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Allen | 7 days |
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Allen, Jefferson Davis | 9 days |
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Calcasieu | 7 days |
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Beauregard | 5 days |
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Allen | 6 days |
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 6 days |
| Mar 20, 9:33 AM CDT | River Flood Warning | LCH | Acadia, Jefferson Davis | 4 days |
| Mar 20, 2:43 PM CDT | Flash Flood Warning | LCH | Beauregard, Vernon | 5 hr |
| Mar 20, 2:46 PM CDT | Tornado Warning | LCH | Calcasieu | 29 min |
| Mar 20, 3:18 PM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu | 6 hr |
Nearby
Flash Flood Warnings in Louisiana, 2012Every flash flood warning in 2012
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.