SAINT-MARC, Haiti (AP) -- A day after sending Haitian families scrambling onto rooftops to avoid flooding, Tropical Storm Hanna was meandering off the country's northern coast Wednesday, dumping heavy rain on much of Hispaniola.

But Hanna was expected to begin moving over the Bahamas later in the day.

A day earlier, Hanna added to the misery in Haiti, a country still recovering from drenchings by Hurricane Gustav and Tropical Storm Fay in the past two weeks.

In all, floods and mudslides from the three storms have killed more than 100 people as Haiti's deforested hills melted away in torrential rains.

Families screamed for help from rooftops Tuesday in a flooded city as U.N. peacekeepers and rescue convoys tried in vain to reach them.

By Tuesday night, Hanna claimed 21 lives in Haiti, including 12 dead in the state containing the cutoff city of Gonaives, said Marie Alta Jean-Baptiste of the country's civil protection office in Port-au-Prince, the capital.