MIAMI (AP) - Tropical Storm Danielle is strengthening in the open Atlantic, but the system is still far from land.
Forecasters at the National Hurricane Center in Miami said Sunday that Danielle had maximum sustained winds of 50 mph (85 kph) and the storm could become a hurricane by late Tuesday.
Meanwhile, Tropical Storm Frank is developing in the Pacific off Mexico, and storm warnings have been issued for parts of the coast.
Forecasters said the storm had maximum sustained winds of 60 mph (95 kph). It was about 120 miles (190 km) south of Puerto Angel, Mexico. It was moving west at 7 mph (11 kph).
Mexico has issued a tropical storm warning for the coast from Puerto Angel west to Tecpan de Galeana. Frank is forecast to move parallel to the coast through Tuesday.
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