Tropical Depression Fred likely to strengthen as it tracks toward Florida

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Tropical Storm Fred impacts Dominican Republic with heavy rain, flooding

The center of Tropical Storm Fred crossed into the Dominican Republic on Wednesday, August 11, bringing strong winds and rain that flooded the streets of Santo Domingo. This footage filmed by Luigi Francois shows vehicles driving through the storm in the capital city. (Credit: Luigi Francois via Storyful)

Tropical Depression Fred headed for a drenching of Cuba and the Bahamas on Thursday on a forecast track that would carry it toward south Florida as a tropical storm by Saturday.

The main threat to the U.S. appeared to be heavy rains affecting Florida and parts of the Southeast starting on Friday, according to the U.S. National Hurricane Center.

It said 3 to 5 inches (7.5 to 12.5 centimeters) of rain were expected across the Florida Keys and southern peninsula by Monday, with isolated maximums of 8 inches (20 centimeters).

RELATED: Disorganized Tropical Storm Fred will likely be a ‘rainmaker’ for Bay Area this weekend

Already a tropical storm, it was weakened back to depression force by its spin over Haiti and the Dominican Republic, where it knocked out power to some 400,000 customers and caused flooding that forced officials to shut down part of the country's aqueduct system, interrupting water service for hundreds of thousands of people.

Local officials reported hundreds of people were evacuated and some buildings were damaged. There were no immediate reports of casualties.

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NOAA plane tracks Eastern edge of Tropical Depression Fred

Over 300,000 customers were without power in the Dominican Republic after Tropical Depression Fred struck the country. (Credit: Nick Underwood/NOAA via Storyful)

Heavy rains continued to pound Hispaniola, which the two nations share, on Thursday.

The Hurricane Center said the storm had maximum sustained winds of 35 mph (55 kph) Thursday morning while centered just north of Cuba's eastern tip.

It was about 105 miles (170 kilometers) west of Great Inagua Island in the southernmost Bahamas and 180 miles (290 kilometers) east of Camaguey, Cuba.

It was heading west-northwest at 14 mph (22 kph).

Fred was expected to produce 3 to 5 inches (7.5 to 12.5 centimeters) o rain across the Dominican Republic and the western Bahamas, as well as 1 to 3 inches (2.5 to 7.5 centimeters) over Haiti, the Turks and Caicos, the eastern Bahamas, and Cuba.

Fred became the sixth named storm of the Atlantic hurricane season late Tuesday as it moved past the U.S. Virgin Islands and Puerto Rico.