Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 20, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at May 2, 2012, 5:04 PM CDT for Ascension Parish, Livingston Parish, Louisiana. It was in force for 116 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
- May 2, 2012, 5:04 PM CDT (22:04 UTC)
- Expired
- May 2, 2012, 7:00 PM CDT
- In force
- 116 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ascension Parish, LA, Livingston Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.1 hours before the alert went out and 113 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
- 2546 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 482 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
666
WGUS54 KLIX 022204
FFWLIX
LAC005-063-030000-
/O.NEW.KLIX.FF.W.0020.120502T2204Z-120503T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
504 PM CDT WED MAY 2 2012
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL ASCENSION PARISH IN SOUTHEAST LOUISIANA...
THIS INCLUDES THE CITY OF GONZALES...
SOUTH CENTRAL LIVINGSTON PARISH IN SOUTHEAST LOUISIANA...
* UNTIL 700 PM CDT
* AT 459 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A CLUSTER OF THUNDERSTORMS OVER THE WARNED
AREA. RADAR ESTIMATES NEAR 3 INCHES HAVE OCCURRED NEAR PORT
VINCENT SINCE 4 PM. DUE TO THE SLOW MOVEMENT...AN ADDITIONAL 1 TO
2 INCHES WILL CAUSE FLOODING IN AND NEAR PORT VINCENT AND SOUTHERN
PORTION OF THE BATON ROUGE METRO AREA.
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 3039 9073 3021 9073 3021 9094 3034 9094
3034 9091 3035 9090 3037 9092 3036 9094
3039 9094
$$The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 6:17 AM CDT | Special Marine Warning | LIX | 43 min | |
| May 2, 7:42 AM CDT | Special Marine Warning | LIX | 63 min | |
| May 2, 8:39 AM CDT | Special Marine Warning | LIX | 36 min | |
| May 2, 10:03 AM CDT | Special Marine Warning | LIX | 57 min | |
| May 2, 2:13 PM CDT | Areal Flood Advisory | LIX | Tangipahoa | 2 hr |
| May 2, 3:21 PM CDT | Flash Flood Warning | LIX | Tangipahoa | 114 min |
| May 2, 4:15 PM CDT | Areal Flood Advisory | LIX | Ascension, Livingston | 2 hr |
| May 2, 4:38 PM CDT | Areal Flood Advisory | LIX | East Baton Rouge, Iberville | 112 min |
| May 2, 5:09 PM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville | 2 hr |
| May 2, 6:09 PM CDT | Areal Flood Advisory | LIX | Livingston | 111 min |
| May 2, 6:21 PM CDT | Flash Flood Watch | LIX | Assumption, Saint Bernard, Saint James, Saint John the Baptist | 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.