A COOL...DRY AIRMASS OVER THE AREA WILL LINGER OVER THE AREA INTO WEDNESDAY...BUT A SWITCH IN THE LOW LEVEL FLOW BEGINNING WEDNESDAY WILL START TO INCREASE MOISTURE LEVELS AHEAD OF A SYSTEM EXPECTED TO BRING RAIN TO THE AREA BEGINNING LATE THURSDAY...LASTING INTO FRIDAY NIGHT. THIS SYSTEM WILL LEAVE A WEAK TRAILING COLD FRONT ALONG THE GULF COAST FOR SATURDAY...WITH A WEAK NORTHERLY FLOW SATURDAY INTO SATURDAY NIGHT. ANOTHER SYSTEM WILL APPROACH THE AREA LATE SUNDAY INTO SUNDAY NIGHT...WITH SOUTHERLY FLOW RETURNING BY SUNDAY AFTERNOON.