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.

The Southeast is in for days of heavy rain and some potential for tropical mischief in the Gulf later in the week as the National Hurricane Center monitors an area near Florida.

A flood Watch is in effect until 7 p.m. Sunday night for a portion of North Texas.

Rivers across central Texas, the Concho Valley and Hill County are rising after another night of heavy rain touched off flash floods, just over a week after the area was devastated by a July 4 deluge that killed at least 120 people and left many more missing.

The best chance of storms in Houston will occur between 2 and 7 p.m. A few storms could produce heavy rain and isolated flooding.

Downpours look likely on Monday, and they may be a bit more widespread.