Tropical Storm Chantal expected to become hurricane.(Knight Ridder Newspapers)

MIAMI _ Moving too quickly for its own good, a somewhat disorganized Tropical Storm Chantal raced Saturday through the Caribbean along a path close enough to Jamaica and the Cayman Islands to worry residents, tourists and authorities.

The storm carried winds of nearly 60 mph and forecasters warned that even a glancing blow could produce 3 to 5 inches of rain, with more in mountainous areas. Chantal posed no immediate threat to the U.S. mainland, but that could change later in the week.

"All indications are that, in three or four days, there will be a hurricane in the Gulf of Mexico," said Lixion Avila of the National Hurricane Center.

On Saturday, …