A system that has been producing heavy rain and thunderstorms across Florida could become a tropical depression later this week, according to the National Hurricane Center.

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.

Depression or no depression, the system could bring several inches of rain to the north-central Gulf Coast, including Alabama, through Friday. The National Weather Service in Mobile thinks that the most rain with this system will likely fall closer to the coast, with scattered storms possible.

Regardless of development, heavy rainfall is expected over portions of Florida, which could bring localized flash flooding through mid-week.

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.