By Sheila Dang and Ashitha Shivaprasad HOUSTON, June 16 (Reuters) - A tropical storm was expected to form off the Texas coast by Wednesday morning from a system labeled Potential Tropical Cyclone One,

A disturbance in the Gulf is expected to bring heavy rain and flash flooding to Texas and Louisiana this week.

Some water rescues have already been reported in parts of central and southern Texas.

The Atlantic's first storm could form Tuesday. Here is what to expect in the Florida Panhandle.

Dangerous flooding continued across Texas as forecasters tracked a tropical disturbance that could briefly strengthen into the Atlantic season's first named storm before moving inland later this week.

Although Arthur would be short-lived if it forms, it is expected to bring the potential for flash flooding along the coast, possibly as far east as the Florida Panhandle.