Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 18, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Mar 11, 2012, 7:42 PM CDT for 4 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It was in force for 3 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 11, 2012, 7:42 PM CDT (00:42 UTC)
- Expired
- Mar 11, 2012, 10:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ashley County, AR, Chicot County, AR, East Carroll Parish, LA, Morehouse Parish, LA, Richland Parish, LA, West Carroll Parish, LA
The radar
The Jackson/Brandon,MS radar (KDGX), 152 km from the middle of the area, began a volume at 00:43 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 11, 7:55 PM CDT | FLASH FLOOD | Bastrop, LA | SEVERAL ROADS UNDER WATER ACROSS BASTROP |
| Mar 11, 8:45 PM CDT | FLASH FLOOD | 6 Ese Mer Rouge, LA | SEVERAL RURAL ROADS IN EASTERN MOREHOUSE PARISH SHOWED EVIDENCE OF SIGNIFICANT FLASH FLOODING WITH SOME AREAS NEAR INTERSECTIONS SHOWING DAMAGE ALONG THE SIDES OF THE ROADS AND NEAR DITCHES. |
| Mar 11, 9:00 PM CDT | FLASH FLOOD | 5 Nnw Oak Grove, LA | HILL CHURCH AND ARMFIELD ROADS WERE FLOODED |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 0.7 hours before the alert went out and 142 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
- 10 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
729
WGUS54 KJAN 120042
FFWJAN
ARC003-017-LAC035-067-083-123-120345-
/O.NEW.KJAN.FF.W.0018.120312T0042Z-120312T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
742 PM CDT SUN MAR 11 2012
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN EAST CARROLL PARISH IN NORTHEAST LOUISIANA...
THIS INCLUDES THE CITY OF LAKE PROVIDENCE...
MOREHOUSE PARISH IN NORTHEAST LOUISIANA...
THIS INCLUDES THE CITY OF BASTROP...
NORTHERN RICHLAND PARISH IN NORTHEAST LOUISIANA...
THIS INCLUDES THE CITIES OF...START...RAYVILLE...
WEST CARROLL PARISH IN NORTHEAST LOUISIANA...
SOUTHEASTERN ASHLEY COUNTY IN SOUTHEAST ARKANSAS...
THIS INCLUDES THE CITY OF WILMOT...
SOUTHERN CHICOT COUNTY IN SOUTHEAST ARKANSAS...
THIS INCLUDES THE CITIES OF...LAKE VILLAGE...EUDORA...
* UNTIL 1045 PM CDT
* AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
WIDESPREAD MODERATE TO HEAVY RAIN OVER THE WARNING AREA...WITH
UP TO 2 INCHES OF RAIN HAVING ALREADY FALLEN THIS EVENING. A BAND
OF THUNDERSTORMS PRODUCING RAINFALL OF UP TO 2 INCHES IN AN HOUR
WAS OVER SOUTHERN MOREHOUSE AND NORTHERN RICHLAND PARISHES...MOVING
NORTHEAST AT 30 MPH. THIS VERY HEAVY RAINFALL MOVING OVER AREAS THAT
HAVE ALREADY RECEIVED MODERATE TO HEAVY RAIN WILL CAUSE FLOODING OF
LOW LYING AND FLOOD PRONE AREAS.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHELBURN...MILLIKIN...GASSOWAY...DARNELL...GOODWILL...GALION...
JONES...CHICOT JUNCTION...PORTLAND...PARKDALE AND OAK GROVE
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...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER
COVERS THE ROAD. FIND ALTERNATE ROUTES AND MOVE TO HIGHER GROUND.
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 3275 9203 3309 9162 3335 9142 3338 9113
3313 9112 3313 9120 3298 9112 3294 9113
3293 9113 3299 9117 3292 9121 3290 9115
3293 9113 3293 9112 3270 9118 3233 9200
3240 9200 3252 9191 3265 9192 3270 9203
$$
AEG2 follow-up statements
216
WGUS74 KJAN 120213
FFSJAN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
913 PM CDT SUN MAR 11 2012
ARC003-017-LAC035-067-083-123-120345-
/O.CON.KJAN.FF.W.0018.000000T0000Z-120312T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHLEY AR-CHICOT AR-RICHLAND LA-MOREHOUSE LA-EAST CARROLL LA-
WEST CARROLL LA-
913 PM CDT SUN MAR 11 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
SOUTHERN CHICOT AND SOUTHEASTERN ASHLEY COUNTIES...AND WEST
CARROLL...NORTHERN EAST CARROLL...MOREHOUSE AND NORTHERN RICHLAND
PARISHES...
AT 911 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE STRONGEST THUNDERSTORMS HAD MOVED EAST OF THE WARNED AREA.
HOWEVER...ESTIMATED RADAR RAINFALL AMOUNTS ON THE ORDER OF TWO TO
FOUR INCHES...HAVE OCCURRED IN THE PAST THREE HOURS...AND MODERATE
RAIN CONTINUED ACROSS MUCH OF THE WARNED AREA. SOME FLOODING OF
ROADWAYS HAS BEEN REPORTED IN MOREHOUSE PARISH...AND FLOODING IS
LIKELY OCCURRING IN WEST CARROLL PARISH WHERE THE HEAVIEST RAINFALL
AMOUNTS HAVE OCCURRED BASED ON DOPPLER RADAR.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHELBURN...MILLIKIN...GASSOWAY...JONES...CHICOT JUNCTION...
PARKDALE...LAKE VILLAGE AND EUDORA
MODERATE TO HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR
THE NEXT TWO HOURS...WITH AN ADDITIONAL ONE INCH POSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER
COVERS THE ROAD. FIND ALTERNATE ROUTES AND MOVE TO HIGHER GROUND.
&&
LAT...LON 3275 9203 3309 9162 3335 9142 3338 9113
3313 9112 3313 9120 3298 9112 3294 9113
3293 9113 3299 9117 3292 9121 3290 9115
3293 9113 3293 9112 3270 9118 3233 9200
3240 9200 3252 9191 3265 9192 3270 9203
$$
AEG935
WGUS74 KJAN 120347
FFSJAN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1047 PM CDT SUN MAR 11 2012
ARC003-017-LAC035-067-083-123-120353-
/O.EXP.KJAN.FF.W.0018.000000T0000Z-120312T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHLEY AR-CHICOT AR-RICHLAND LA-MOREHOUSE LA-EAST CARROLL LA-
WEST CARROLL LA-
1047 PM CDT SUN MAR 11 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1045 PM CDT FOR SOUTHERN
CHICOT AND SOUTHEASTERN ASHLEY COUNTIES...AND WEST CARROLL...NORTHERN
EAST CARROLL...MOREHOUSE AND NORTHERN RICHLAND PARISHES...
AT 1043 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE RAIN WAS DIMINISHING ACROSS THE WARNING AREA. HENCE THE WARNING
WILL BE ALLOWED TO EXPIRE.
RADAR AND REPORTS INDICATED THAT BETWEEN TWO AND THREE AND A HALF
INCHES OF RAIN FELL THIS EVENING ACROSS WEST CARROLL...EASTERN
MOREHOUSE...AND NORTHERN EAST CARROLL PARISHES...AND SOUTHERN
CHICOT COUNTY. AN AUTOMATED RAIN GAGE IN SOUTHERN CHICOT COUNTY
MEASURED 2.87 INCHES OF RAIN THIS EVENING. SOME FLOODING OF ROADWAYS
AND A COUPLE OF HOMES WERE REPORTED IN THESE AREAS DURING THE HEIGHT
OF THE HEAVY RAIN...AND SOME HIGH WATER MAY STILL BE ENCOUNTERED IN
A FEW AREAS. MOTORISTS SHOULD BE CAUTIOUS IF VENTURING OUT IN
THESE AREAS TONIGHT.
LAT...LON 3275 9203 3309 9162 3335 9142 3338 9113
3313 9112 3313 9120 3298 9112 3294 9113
3293 9113 3299 9117 3292 9121 3290 9115
3293 9113 3293 9112 3270 9118 3233 9200
3240 9200 3252 9191 3265 9192 3270 9203
$$
AEGThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 7:07 PM CDT | Special Weather Statement | JAN | Franklin | 28 min |
| Mar 11, 7:18 PM CDT | Special Weather Statement | JAN | Morehouse, Richland | 37 min |
| Mar 11, 7:24 PM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 51 min |
| Mar 11, 7:38 PM CDT | Severe Thunderstorm Warning | JAN | Morehouse, Richland, West Carroll | 37 min |
| Mar 11, 7:48 PM CDT | Tornado Warning | JAN | Morehouse, West Carroll | 27 min |
| Mar 11, 8:06 PM CDT | Special Weather Statement | JAN | Franklin | 29 min |
| Mar 11, 8:07 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Madison | 38 min |
| Mar 11, 8:16 PM CDT | Special Weather Statement | JAN | East Carroll | 29 min |
| Mar 11, 8:28 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll | 47 min |
| Mar 11, 8:48 PM CDT | Flash Flood Warning | JAN | East Carroll, Franklin, Madison, Richland, Tensas | 117 min |
| Mar 11, 9:03 PM CDT | Severe Thunderstorm Warning | JAN | Madison | 42 min |
Nearby
Flash Flood Warnings in Louisiana, 2012Flash Flood Warnings in Arkansas, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.