Alert archive / Louisiana / Flash Flood Warnings in 2011
Flash Flood Warning 25, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Mar 8, 2011, 11:30 PM CST for Catahoula Parish, Louisiana. It was in force for 3 hr. 1 report 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 8, 2011, 11:30 PM CST (05:30 UTC)
- Expired
- Mar 9, 2011, 2:30 AM CST
- In force
- 3 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
County Catahoula Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 9, 1:20 AM CST | FLASH FLOOD | Jonesville, LA | EXTENSIVE FLOODING IS OCCURRING IN THE CITY OF JONESVILLE. WATER WAS ENTERING SEVERAL BUILDINGS AND VEHICLES. NUMEROUS ROADS WERE FLOODED. OVER 10 INCHES OF RAIN HAD BEEN MEASURED AT THE POLICE STATION. |
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, 5.5 hours before the alert went out and 168 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 600 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 542 m²/s²
- 0-3 km storm-relative helicity
- 664 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
799
WGUS54 KJAN 090530
FFWJAN
LAC025-090830-
/O.NEW.KJAN.FF.W.0025.110309T0530Z-110309T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1130 PM CST TUE MAR 8 2011
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CATAHOULA PARISH IN NORTHEAST LOUISIANA...
* UNTIL 230 AM CST
* AT 1129 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE NORTHERN HALF OF
THE PARISH. THE STORMS WERE GENERALLY MOVING NORTHEAST AROUND 40
MPH...BUT WERE TENDING TO REDEVELOP OVER THE SAME LOCATIONS.
ESTIMATED RADAR RAINFALL AMOUNTS...ON THE ORDER OF TWO TO FOUR
INCHES...HAVE OCCURRED IN THE PAST THREE HOURS.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LEE
BAYOU...AIMWELL...SHERWOOD...ENTERPRISE AND ROSEFIELD
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 3193 9201 3194 9191 3198 9188 3188 9176
3191 9170 3197 9164 3197 9159 3180 9156
3175 9153 3174 9156 3177 9160 3173 9165
3174 9169 3164 9170 3162 9174 3165 9177
3162 9181 3159 9182 3151 9201
$$
BYB1 follow-up statement
946
WGUS74 KJAN 090727
FFSJAN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
127 AM CST WED MAR 9 2011
LAC025-090830-
/O.CON.KJAN.FF.W.0025.000000T0000Z-110309T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATAHOULA LA-
127 AM CST WED MAR 9 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CST FOR
CATAHOULA PARISH...
AT 126 AM CST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SERIOUS
FLOODING OCCURRING IN JONESVILLE WITH MOST ROADS UNDERWATER AND
WATER ENTERING NUMEROUS BUILDINGS. ESTIMATED RADAR RAINFALL
AMOUNTS...ON THE ORDER OF FIVE TO SEVEN INCHES...HAVE OCCURRED IN
THE PAST SIX HOURS.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
AIMWELL...SHERWOOD...ENTERPRISE AND ROSEFIELD
HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT HOUR.
WITH AN ADDITIONAL ONE INCH POSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3193 9201 3194 9191 3198 9188 3188 9176
3191 9170 3197 9164 3197 9159 3180 9156
3175 9153 3174 9156 3177 9160 3173 9165
3174 9169 3164 9170 3162 9174 3165 9177
3162 9181 3159 9182 3151 9201
$$
BYBThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 7:43 PM CST | Severe Thunderstorm Warning | JAN | Catahoula, Concordia | 77 min |
| Mar 8, 9:58 PM CST | Severe Thunderstorm Warning | JAN | Catahoula | 62 min |
| Mar 8, 10:47 PM CST | Severe Thunderstorm Warning | JAN | Catahoula, Concordia | 43 min |
| Mar 8, 11:16 PM CST | Severe Thunderstorm Warning | JAN | Concordia, Franklin, Tensas | 44 min |
| Mar 8, 11:48 PM CST | Flash Flood Warning | JAN | Franklin, Madison, Tensas | 3 hr |
| Mar 9, 12:07 AM CST | Severe Thunderstorm Warning | JAN | Concordia | 23 min |
| Mar 9, 12:28 AM CST | Flash Flood Warning | JAN | Catahoula, Concordia | 3 hr |
| Mar 9, 12:58 AM CST | Severe Thunderstorm Warning | JAN | Concordia | 47 min |
| Mar 9, 2:34 AM CST | Flash Flood Warning | JAN | Catahoula | 116 min |
| Mar 9, 2:47 AM CST | Flash Flood Warning | JAN | Tensas | 118 min |
| Mar 9, 3:24 AM CST | Flash Flood Warning | JAN | Catahoula, Concordia | 2 hr |
| Mar 9, 4:28 AM CST | Areal Flood Warning | JAN | Catahoula | 6 hr |
Nearby
Flash Flood Warnings in Louisiana, 2011Every flash flood warning in 2011
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.