Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 88, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Jul 20, 2012, 5:24 PM CDT for Catahoula Parish, Louisiana. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2012, 5:24 PM CDT (22:24 UTC)
- Expired
- Jul 20, 2012, 6:14 PM CDT
- In force
- 50 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
County Catahoula Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.4 hours before the alert went out and 185 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
- 2709 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
550
WGUS54 KJAN 202224
FFWJAN
LAC025-210030-
/O.NEW.KJAN.FF.W.0088.120720T2224Z-120721T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
524 PM CDT FRI JUL 20 2012
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN CATAHOULA PARISH IN NORTHEAST LOUISIANA...
THIS INCLUDES THE CITY OF LARTO...
* UNTIL 730 PM CDT
* AT 524 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
THUNDERSTORMS PRODUCING VERY HEAVY RAIN 7 MILES NORTHWEST OF
LARTO...MOVING SOUTH AT 10 MPH. ESTIMATED RADAR RAINFALL AMOUNTS...
ON THE ORDER OF TWO TO FOUR INCHES...HAVE OCCURRED IN THE PAST
HOUR.
* THE STORM PRODUCING THUNDERSTORMS PRODUCING VERY HEAVY RAIN WILL
OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED PARISH.
VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL ONE TO THREE INCHES POSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3139 9201 3156 9201 3155 9188 3137 9186
3131 9187 3130 9201 3133 9202 3138 9202
$$
OLB1 follow-up statement
617
WGUS74 KJAN 202314
FFSJAN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
614 PM CDT FRI JUL 20 2012
LAC025-202325-
/O.CAN.KJAN.FF.W.0088.000000T0000Z-120721T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATAHOULA LA-
614 PM CDT FRI JUL 20 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN
CATAHOULA PARISH...
RAINFALL HAS ENDED IN THE WARNED AREA.
LAT...LON 3139 9201 3156 9201 3155 9188 3137 9186
3131 9187 3130 9201 3133 9202 3138 9202
$$
OLBThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 7:20 PM CDT | Special Weather Statement | JAN | Catahoula, Concordia | 30 min |
| Jul 19, 7:58 PM CDT | Special Weather Statement | JAN | Catahoula | 47 min |
| Jul 20, 4:21 PM CDT | Special Weather Statement | JAN | Catahoula | 29 min |
| Jul 20, 5:02 PM CDT | Severe Thunderstorm Warning | JAN | Catahoula | 43 min |
| Jul 20, 6:45 PM CDT | Special Weather Statement | JAN | Concordia | 30 min |
| Jul 20, 6:46 PM CDT | Special Weather Statement | JAN | Tensas | 29 min |
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.