...COASTAL FLOOD ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 6 AM CST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A COASTAL FLOOD ADVISORY...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 6 AM CST WEDNESDAY. THE COASTAL FLOOD WATCH IS NO LONGER IN EFFECT. AN AREA OF LOW PRESSURE IN THE NORTHWEST GULF OF MEXICO WILL MOVE ACROSS THE CENTRAL GULF COAST REGION LATE TODAY THROUGH EARLY WEDNESDAY MORNING. MODERATE TO STRONG NORTHEAST WINDS EARLY THIS MORNING WILL BECOMING EAST TO SOUTHEAST AND CONTINUE TO INCREASE THIS AFTERNOON...THEN REMAIN STRONG OUT OF THE SOUTH AND SOUTHEAST TONIGHT. THE COMBINATION OF WIND DRIVEN TIDES AND HIGH ASTRONOMICAL TIDES ARE EXPECTED TO CAUSE A RAPID RISE IN WATER LEVELS TO AROUND 2 FEET ABOVE NORMAL THIS AFTERNOON AND EVENING. MINOR COASTAL FLOODING IS LIKELY TO DEVELOP AROUND THE TIME OF HIGH TIDE OUTSIDE OF HURRICANE PROTECTION LEVEES NEAR THE COAST...AND POSSIBLY ALONG THE NORTH SHORE OF LAKE PONTCHARTRAIN. HIGH TIDES OCCUR EARLY THIS EVENING AROUND ATCHAFALAYA BAY...AND DURING THE LATER EVENING HOURS TO JUST AFTER MIDNIGHT ACROSS THE REMAINDER OF THE COASTLINE AND ACROSS LAKE PONTCHARTRAIN. FALLING ASTRONOMICAL TIDES AND THEN MORE WESTERLY SURFACE WINDS WILL CAUSE WATER LEVELS TO DROP BELOW FLOOD LEVELS BETWEEN 3 AND 6 AM TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE. &&
...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI... INCLUDING THE FOLLOWING AREAS...IN SOUTHEAST LOUISIANA...LOWER JEFFERSON...LOWER LAFOURCHE...LOWER PLAQUEMINES...LOWER ST. BERNARD...LOWER TERREBONNE...ORLEANS...ST. CHARLES...UPPER JEFFERSON...UPPER LAFOURCHE...UPPER PLAQUEMINES...UPPER ST. BERNARD AND UPPER TERREBONNE. IN SOUTHERN MISSISSIPPI... HANCOCK...HARRISON AND JACKSON. * FROM THIS EVENING THROUGH WEDNESDAY MORNING * A LOW PRESSURE SYSTEM DEVELOPING ALONG A STALLED FRONT IN THE WESTERN GULF OF MEXICO WILL MOVE INTO SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI TONIGHT. WIDESPREAD AND STEADY MODERATE TO OCCASIONALLY HEAVY RAINFALL IS EXPECTED WITH THE PASSAGE OF THIS SYSTEM THROUGH WEDNESDAY MORNING. * RAINFALL ACCUMULATIONS GENERALLY BETWEEN 2 TO 4 INCHES IS EXPECTED ACROSS THE WATCH AREA FROM THIS EVENING THROUGH WEDNESDAY MORNING. A BAND OF HIGHER AMOUNTS BETWEEN 4 AND 6 INCHES MAY DEVELOP MAINLY OVER THE MISSISSIPPI COASTAL COUNTIES AND LOWER SOUTHEAST LOUISIANA BY WEDNESDAY MORNING. RUN OFF WILL CAUSE AREA RIVERS AND STREAMS TO SWELL TO HIGHER LEVELS AND POSSIBLY CAUSE A FEW TO FLOOD INTO THE MIDDLE OF THE WEEK. IN ADDITION...ANTICIPATED STRONG ONSHORE FLOW TONIGHT MAY COMPOUND RIVER RISES DUE TO TIDAL AFFECTS UNTIL WINDS SHIFT TO AN OFFSHORE DIRECTION. 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. &&
...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT... A STRONG LOW PRESSURE AREA...WITH GALE FORCE WINDS UP TO 45 MPH WITH HIGHER GUSTS...IS EXPECTED TO DEVELOP IN THE WEST GULF OF MEXICO TONIGHT AND MOVE ACROSS THE CENTRAL GULF COAST REGION LATE TUESDAY THROUGH EARLY WEDNESDAY MORNING. MODERATE TO STRONG NORTHEAST WINDS TONIGHT AND TUESDAY MORNING WILL BECOMING EAST TO SOUTHEAST AND CONTINUE TO INCREASE TUESDAY AFTERNOON...THEN REMAIN STRONG OUT OF THE SOUTH AND SOUTHEAST 30 TO 40 MPH WITH SOME HIGHER GUSTS IN COASTAL SECTIONS THROUGH MUCH OF TUESDAY NIGHT. THE COMBINATION OF WIND DRIVEN TIDES AND LARGE ASTRONOMICAL TIDE RANGES ARE EXPECTED TO CAUSE A RAPID RISE IN WATER LEVELS OF 3 TO 4 FEET FROM LOW TIDE IN THE MORNING TO HIGH TIDE IN THE EVENING TUESDAY. MINOR INUNDATION OF COASTAL AND ESTUARY AREAS ARE LIKELY OUTSIDE OF HURRICANE PROTECTION LEVEES AND NEAR THE TIDAL LAKES. WATER LEVELS WILL DROP AND END THE COASTAL FLOODING THREAT LATE WEDNESDAY MORNING AS WINDS SHIFT TO WESTERLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. &&Note: In order to comply with National Weather Service safety tests, occasionally this product will display test alerts, which are normally conducted during calm, quiet weather.
(11/30/2009 2:40 PM)
(11/30/2009 1:30 PM)
(11/6/2009 5:30 AM)