Alert archive / Louisiana / Flash Flood Warnings in 2012
Flash Flood Warning 78, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 31, 2012, 2:39 PM CDT for Amite County, Pike County, Walthall County, Mississippi; 4 parishes in Louisiana. It was in force for 4 hr. 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 31, 2012, 2:39 PM CDT (19:39 UTC)
- Expired
- Aug 31, 2012, 6:30 PM CDT
- In force
- 4 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Livingston Parish, LA, Saint Helena Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Amite County, MS, Pike County, MS, Walthall County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.7 hours before the alert went out and 109 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
- 1794 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
264
WGUS54 KLIX 311939
FFWLIX
LAC063-091-105-117-MSC005-113-147-312330-
/O.NEW.KLIX.FF.W.0078.120831T1939Z-120831T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
239 PM CDT FRI AUG 31 2012
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN LIVINGSTON PARISH IN SOUTHEAST LOUISIANA...
ST. HELENA PARISH IN SOUTHEAST LOUISIANA...
THIS INCLUDES THE CITY OF GREENSBURG...
TANGIPAHOA PARISH IN SOUTHEAST LOUISIANA...
THIS INCLUDES THE CITIES OF...HAMMOND...AMITE...
NORTHWESTERN WASHINGTON PARISH IN SOUTHEAST LOUISIANA...
EASTERN AMITE COUNTY IN SOUTHERN MISSISSIPPI...
PIKE COUNTY IN SOUTHERN MISSISSIPPI...
THIS INCLUDES THE CITY OF MCCOMB...
WESTERN WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...
* UNTIL 630 PM CDT
* AT 234 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
VERY HEAVY RAIN FROM THUNDERSTORMS CONTINUING TO DEVELOP AND MOVE
NORTHEAST OVER THE WARNED AREA. ONE TO TWO INCHES OF RAIN HAS
FALLEN OVER THE WARNED AREA OVER THE LAST THREE HOURS AND
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES IS POSSIBLE
THROUGH THE AFTERNOON. IN ADDITION...THE GROUND IS ALREADY
SATURATED FROM SIGNIFICANT RAINFALL OVER THE LAST SEVERAL DAYS.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT
HERMAN...SUMMIT...OSYKA...MAGNOLIA AND GILLSBERG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN NEW
ORLEANS.
&&
LAT...LON 3134 9009 3047 9033 3048 9084 3135 9067
3136 9011
$$
98/SOThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 8:41 PM CDT | Flash Flood Warning | LIX | Walthall | 3 hr |
| Aug 30, 8:44 PM CDT | Tornado Warning | LIX | Walthall | 31 min |
| Aug 30, 7:04 PM CDT | Flash Flood Warning | LIX | Ascension, Livingston, Tangipahoa | 3 hr |
| Aug 31, 11:56 AM CDT | Flash Flood Warning | LIX | Ascension | 3 hr |
Nearby
Flash Flood Warnings in Louisiana, 2012Flash Flood Warnings in Mississippi, 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.