TANGIPAHOA-WASHINGTON-ST. TAMMANY-PEARL RIVER- INCLUDING THE CITIES OF...HAMMOND...PONCHATOULA...BOGALUSA... FRANKLINTON...SLIDELL...MANDEVILLE...COVINGTON...LACOMBE... PICAYUNE 334 PM CDT SAT MAR 20 2010 .TONIGHT...SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE LOWER 40S. SOUTH WINDS 10 TO 15 MPH SHIFTING TO THE WEST AFTER MIDNIGHT. CHANCE OF PRECIPITATION 80 PERCENT. .SUNDAY...COOLER. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS IN THE MID 50S. WEST WINDS 10 TO 20 MPH. .SUNDAY NIGHT...PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE MID 30S. WEST WINDS 10 TO 15 MPH. .MONDAY...PARTLY CLOUDY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO 15 MPH. .MONDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S. NORTHWEST WINDS TO 10 MPH. .TUESDAY...WARMER...SUNNY. HIGHS IN THE UPPER 60S. .TUESDAY NIGHT...CLEAR. LOWS IN THE MID 40S. .WEDNESDAY...SUNNY. HIGHS IN THE MID 70S. .WEDNESDAY NIGHT...CLEAR IN THE EVENING THEN BECOMING PARTLY CLOUDY. LOWS IN THE LOWER 50S. .THURSDAY...MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN SHOWERS AND THUNDERSTORMS. HIGHS IN THE MID 70S. .THURSDAY NIGHT...MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 50S. .FRIDAY...PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN SHOWERS AND THUNDERSTORMS. HIGHS IN THE MID 70S. .FRIDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 50S. .SATURDAY...SUNNY. HIGHS IN THE MID 70S.