Published: Aug 26, 2010 5:25 PM EDT
Updated: Aug 26, 2010 2:25 PM EDT

MIAMI (AP) - Hurricane Danielle is churning across the open Atlantic as it heads toward Bermuda.

Danielle's maximum sustained winds Thursday are near 105 mph (165 kph) and additional strengthening is expected.

Danielle is located about 770 miles (1,235 kilometers) southeast of Bermuda and moving northwest near 15 mph (24 kph).

Farther east in the Atlantic, Tropical Storm Earl has maximum sustained winds near 45 mph (75 kph). Forecasters expect Earl to become a hurricane by early Saturday.

In the Pacific off Mexico's coast, Hurricane Frank is a little stronger but is expected to start gradually weakening Friday as it moves over cooler waters.