Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 47, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 11, 2012, 7:55 AM CDT for Livingston Parish, Louisiana. It was in force for 95 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
- Aug 11, 2012, 7:55 AM CDT (12:55 UTC)
- Expired
- Aug 11, 2012, 9:30 AM CDT
- In force
- 95 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
County Livingston Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 0.9 hours before the alert went out and 114 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
- 1542 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- -32 m²/s²
- Significant tornado parameter
- -0.2
- Supercell composite
- -1.1
The text
As transmitted, in the capitals the NWS used until 2016.
292 WGUS54 KLIX 111255 FFWLIX LAC063-111500- /O.NEW.KLIX.FF.W.0047.120811T1255Z-120811T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 755 AM CDT SAT AUG 11 2012 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LIVINGSTON PARISH IN SOUTHEAST LOUISIANA... THIS INCLUDES THE CITY OF DENHAM SPRINGS... * UNTIL 1000 AM CDT * AT 752 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED FLASH FLOODING FROM A THUNDERSTORM NEAR WALKER...OR 7 MILES EAST OF DENHAM SPRINGS...MOVING NORTHEAST AT 5 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LIVINGSTON PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 ARE POSSIBLE IN THE WARNED AREA. 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 3053 9098 3054 9072 3036 9065 3040 9096 $$ CAB
1 follow-up statement
553 WGUS74 KLIX 111430 FFSLIX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 930 AM CDT SAT AUG 11 2012 LAC063-111440- /O.CAN.KLIX.FF.W.0047.000000T0000Z-120811T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LIVINGSTON LA- 930 AM CDT SAT AUG 11 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL LIVINGSTON PARISH... THE HEAVY RAINS IN THE WARNED AREA HAS ENDED. LAT...LON 3053 9098 3054 9072 3036 9065 3040 9096 $$
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 2:55 AM CDT | Special Marine Warning | LIX | 95 min | |
| Aug 11, 5:40 AM CDT | Flash Flood Warning | LIX | Saint Tammany | 2 hr |
| Aug 11, 7:14 AM CDT | Flash Flood Warning | LIX | Saint John the Baptist | 2 hr |
| Aug 11, 8:01 AM CDT | Special Marine Warning | LIX | 29 min | |
| Aug 11, 8:27 AM CDT | Special Marine Warning | LIX | 63 min | |
| Aug 11, 8:36 AM CDT | Special Marine Warning | LIX | 24 min | |
| Aug 11, 10:00 AM CDT | Special Marine Warning | LIX | 30 min | |
| Aug 11, 10:37 AM CDT | Special Marine Warning | LIX | 83 min | |
| Aug 11, 11:26 AM CDT | Special Marine Warning | LIX | 34 min | |
| Aug 11, 12:04 PM CDT | Special Marine Warning | LIX | 116 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.