Tropical Storm Melissa, which formed over the Caribbean on Tuesday, is expected to bring lots of rain to the Dominican Republic, Haiti and Jamaica but its path beyond that isn't clear, the Miami-based National Hurricane Center said Wednesday morning.

Melissa, the 13th named storm of the Atlantic season, isn't expected to have major impacts on the mainland United States, the center said Tuesday, but uncertainty over its track remained.

Here's what to know about Tropical Storm Melissa:

Tropical Storm Melissa forecast and path

As of 8 a.m. EDT Wednesday morning, Melissa's center was about 300 miles south-southwest of Port-au-Prince, Haiti, and was moving west-northwest at about 7 mph, the hurricane center said . Maximum sustained winds were 50 mph, with tropical storm-force winds extend

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