FLOOD ADVISORY
Warning Issue Date: 623 AM CST MON DEC 07 2009
ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA...
THIS INCLUDES THE CITIES OF...SLIDELL...MANDEVILLE...EDEN ISLE...
COVINGTON...
* UNTIL 815 AM CST
* AT 621 AM CST... NATIONAL WEATHER SERVICE METEOROLOGISTS AND
DOPPLER RADAR INDICATED VERY HEAVY RAINFALL FROM REDEVELOPING
SHOWERS AND THUNDERSTORMS ACROSS SOUTHERN ST. TAMMANY PARISH. THE
HEAVIEST RAINFALL IS EXPECTED IN THE LACOMBE...SLIDELL...AND PEARL
RIVER AREAS...WITH LIGHTER RAINS VOER MANDEVILLE AND COVINGTON.
RAINFALL OF 2 TO 3 INCHES HAS FALLEN IN THE LAST FEW HOURS...AND
ADDITIONAL RAINFALL OF 1 TO 2 INCHES IS EXPECTED THROUGH 8 AM.
STREET FLOODING HAS BEEN REPORTED IN THE SLIDELL AREA DUE TO THE
HEAVY RAINFALL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.
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.
LAT...LON 3049 8974 3016 8958 3016 8960 3029 9000
3031 9001 3031 9004 3035 9008 3036 9013
3038 9020 3038 9022 3052 9016
$$
FLASH FLOOD WATCH
Warning Issue Date: 500 AM CST MON DEC 07 2009
...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON...
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
* FLASH FLOOD WATCH FOR PORTIONS OF SOUTHEAST LOUISIANA AND
SOUTHERN MISSISSIPPI...INCLUDING THE FOLLOWING AREAS...IN
SOUTHEAST LOUISIANA...ASCENSION...ASSUMPTION...EAST BATON
ROUGE...EAST FELICIANA...IBERVILLE...LIVINGSTON...LOWER ST.
BERNARD...ORLEANS...POINTE COUPEE...ST. CHARLES...ST. HELENA...
ST. JAMES...ST. JOHN THE BAPTIST...ST. TAMMANY...TANGIPAHOA...
UPPER JEFFERSON...UPPER LAFOURCHE...UPPER PLAQUEMINES...UPPER
ST. BERNARD...UPPER TERREBONNE...WASHINGTON...WEST BATON ROUGE
AND WEST FELICIANA. IN SOUTHERN MISSISSIPPI...AMITE...
HANCOCK...HARRISON...JACKSON...PEARL RIVER...PIKE...WALTHALL
AND WILKINSON.
* THROUGH THIS AFTERNOON
* A SERIES OF UPPER LEVEL DISTURBANCES WILL MOVE THROUGH THE
CENTRAL GULF COAST REGION TODAY WHILE A COLD FRONT APPROACHES.
VERY MOIST AIR IN PLACE WILL INTERACT WITH THE DISTURBANCES TO
PRODUCE ADDITIONAL HEAVY RAIN ACROSS MOST OF SOUTHEAST LOUISIANA
AND SOUTH MISSISSIPPI TODAY. MANY AREAS ARE VERY SATURATED FROM
THE HEAVY RAINFALL EARLY THIS MORNING AND LAST EVENING...AND
THERE IS ONGOING STREET FLOODING OCCURRING OVER WIDESPREAD
SECTIONS OF SOME SOUTHEAST LOUISIANA PARISHES. IT WILL NOT TAKE
MUCH ADDITIONAL HEAVY RAINFALL TO PRODUCE FLASH FLOODING TODAY.
THE HEAVIEST RAIN SHOULD OCCUR THROUGH THE DAYTIME HOURS TODAY
BEFORE DIMINISHING IN INTENSITY AND COVERAGE TONIGHT.
* WIDESPREAD ADDITIONAL HEAVY RAINFALL AMOUNTS OF 1 TO 2 INCHES
ARE EXPECTED WITH LOCALIZED HEAVIER AMOUNTS OF 3 TO 4 INCHES
POSSIBLE. THIS WILL RESULT IN AREAS OF STREET
FLOODING...POSSIBLE FLOODING OF CANALS AND SMALL STREAMS...AND
POTENTIALLY MORE SERIOUS FLOODING OF PROPERTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
$$
22/TD
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