Tropical Storm Tammy got stronger on Thursday as it continued to track closer to the Leeward Islands.

The National Hurricane Center said Tammy will bring up to 6 inches of rain, gusty winds and rough seas to some of the islands on Friday and Saturday. Tropical storm watches continued for some of the islands.

The official forecast path then shows Tammy continuing to strengthen and possibly becoming a hurricane by early Saturday.

It is then forecast to take a turn to the northeast and out to sea. It is not expected to threaten the continental United States but could bring rain to the U.S. Virgin Islands and Puerto Rico.

As of 7 a.m. CDT Thursday, Tropical Storm Tammy was located about 465 miles east-southeast of Guadeloupe and was tracking to the west at 16 mph.

Tammy’s sustained winds increased to 60 mph. The hurricane center expects Tammy to continue strengthen and be near hurricane strength (winds 74 mph or higher) by early Saturday, when it could still be near the islands.

The hurricane center’s forecast path takes the center of the storm near or over some of the Leeward Islands on Friday or Saturday. Then it could take a turn to the northeast and avoid the Bahamas.

Tropical storm watches continued on Thursday for Barbados, Dominica, Martinique and Guadeloupe, Antigua, Barbuda, Montserrat, St. Kitts, and Nevis and Saba and St. Eustatius.

The hurricane center said more watches and warnings may be issued later today.

Tammy could bring 3 to 6 inches of rain, with maximum amounts of 10 inches, to some of the northern Windward into the Leeward Islands. One to 2 inches with maximum amounts of 4 inches will be possible for the British and U.S. Virgin Islands and eastern Puerto Rico.

Tammy is the only system in the Atlantic being tracked by the hurricane center. The rest of the Atlantic remained quiet on Thursday.