Tropical Storm Melissa formed over the central Caribbean Sea on Tuesday, according to the National Hurricane Center .
Melissa will bring heavy rainfall to Haiti and the Dominican Republic, with totals of 5 to 10 inches expected through Friday.
Melissa is about 310 miles south-southwest of Port-au-Prince, Haiti, according to the NHC.
The system has a minimum central pressure of 1003 mb and maximum sustained winds of 50 mph.
The NHC advised that residents in Puerto Rico, Hispaniola, Jamaica and Cuba should closely monitor the development of this system.
These locations are at risk of heavy rain, flooding, strong winds and hazardous surf conditions later this week.
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