Houston is expected to be hit by heavy rainfall later in the week, with a slight risk of excessive rainfall on Friday in eastern and southern parts of the area. Regardless of development, showers and thunderstorms will likely move through southeast Texas.

A disorganized low-pressure area off Florida is showing increasing chances of becoming a tropical depression or tropical storm this week.

The hatched areas on the National Hurricane Center's tropical outlook map indicate "areas where a tropical cyclone — which could be a tropical depression, tropical storm or hurricane — could develop," said National Hurricane Center Deputy Director Jamie Rhome.

The National Hurricane Center on Monday increased its forecast chances a system already dumping rain on Florida could develop into the season’s next tropical depression or storm.

South Florida could see some street flooding Monday and Tuesday, thanks to a potential tropical system brewing near the north end of the state. The Miami office of the National Weather Service called for a flood watch - when there's a chance of flooding but it's not yet happening - for Monday afternoon and Tuesday in urban southeast Florida.

Current projections call for 4 to 8 inches of rain from Florida through coastal Alabama, Mississippi, and Louisiana, with isolated totals as high as 16 inches.Wind gusts could reach 40 to 60 mph in parts of southeastern Louisiana,

South Florida will see a soggy start to its week due to a potential tropical system that is forecast to form in the Gulf and then move across Florida, the National Weather Service said Sunday.

Once over the warm waters of the Gulf, the system could turn into a tropical depression or a weak tropical storm.