The National Weather Service has issued a flood watch through Tuesday morning.

Flooding caused by excessive rainfall continues to be possible through the region.

Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

Heavy rain and a few thunderstorms are expected to develop across the watch area from early Tuesday morning and persisting into Tuesday afternoon and evening. Rainfall rate of 1 to 2 inches per hour on dry ground may initially enhance runoff leading to flash flooding of urbanized and low lying areas.

The latest forecast:

Labor Day: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 79. South wind around 5 mph becoming west. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 64. Calm wind. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Tuesday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 69. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Tuesday Night: Showers and possibly a thunderstorm before 9 p.m., then a chance of showers. Some of the storms could produce heavy rainfall. Low around 61. Northeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: A chance of showers. Mostly cloudy, with a high near 69. Northeast wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: Scattered showers, mainly before 9 p.m. Mostly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Thursday: Mostly sunny, with a high near 77.

Thursday Night: Mostly clear, with a low around 55.

Friday: Sunny, with a high near 78.

Friday Night: Mostly clear, with a low around 56.

Saturday: Mostly sunny, with a high near 79.

Saturday Night: Partly cloudy, with a low around 59.

Sunday: A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.

Monday: A chance of showers. Partly sunny, with a high near 77.