Meanwhile, Tropical Storm Danielle is getting stronger Monday far out over the Atlantic.
In Mexico, a tropical storm warning is in effect for the coast from Laguanas de Chacahua westward to Zihuatanejo. A tropical storm watch is in effect from west of Zihuatanejo to Punta San Telmo.
Frank has maximum sustained winds near 60 mph (95 kph) and it's possible it could become a hurricane by late Tuesday. The storm is located about 205 miles (330 kilometers) south-southeast of Acapulco, Mexico, and is expected to move parallel along the southern coast through Wednesday.