Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 49, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 16, 2012, 3:13 PM CDT for Orleans Parish, Saint Bernard Parish, Louisiana. It was in force for 110 min. 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
- Aug 16, 2012, 3:13 PM CDT (20:13 UTC)
- Expired
- Aug 16, 2012, 5:03 PM CDT
- In force
- 110 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Orleans Parish, LA, Saint Bernard Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 16, 3:24 PM CDT | FLASH FLOOD | 1 Nw Chalmette, LA | ST. BERNARD SHERIFFS DEPARTMENT HAS RECEIVED SEVERAL CALLS OF WATER NEAR HOMES IN ARABI AND SEVERAL STREETS IMPASSABLE INCLUDING PORTIONS OF JUDGE PEREZ DRIVE...NORTON STREET AND DOERR DRIVE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.2 hours before the alert went out and 40 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
- 4098 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 542 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
042 WGUS54 KLIX 162013 FFWLIX LAC071-087-162315- /O.NEW.KLIX.FF.W.0049.120816T2013Z-120816T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 313 PM CDT THU AUG 16 2012 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL ORLEANS PARISH IN SOUTHEAST LOUISIANA... EXTREME NORTHWESTERN ST. BERNARD PARISH IN SOUTHEAST LOUISIANA... THIS INCLUDES THE CITY OF CHALMETTE... * UNTIL 615 PM CDT * AT 310 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED FLASH FLOODING FROM A THUNDERSTORM NEAR CHALMETTE...MOVING NORTHEAST AT 5 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF ONE INCH ARE POSSIBLE IN THE WARNED AREA. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. 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. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN NEW ORLEANS. && LAT...LON 3001 9002 3001 8992 2993 8995 2997 9003 $$ 98/SO
1 follow-up statement
736 WGUS74 KLIX 162203 FFSLIX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 503 PM CDT THU AUG 16 2012 LAC071-087-162211- /O.CAN.KLIX.FF.W.0049.000000T0000Z-120816T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORLEANS LA-ST. BERNARD LA- 503 PM CDT THU AUG 16 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME NORTHWESTERN ST. BERNARD AND CENTRAL ORLEANS PARISHES... A FEW LIGHT SPRINKLES ARE STILL OCCURRING ACROSS THE WARNED AREA...BUT ALL OF THE HEAVIER RAIN HAS DIMINISHED. ACCORDING TO REPORTS RECEIVED FROM THE AREA...THE HIGH WATERS HAVE RECEDED. LAT...LON 3001 9002 3001 8992 2993 8995 2997 9003 $$ 98/SO
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 1:54 PM CDT | Special Marine Warning | LIX | 66 min | |
| Aug 16, 2:34 PM CDT | Areal Flood Advisory | LIX | Orleans, Saint Bernard | 116 min |
| Aug 16, 2:57 PM CDT | Special Marine Warning | LIX | 33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.