Hurricane Matthew is now steering a course directly for the southeastern United States, prompting widespread evacuations.
Tropical Storm Nicole formed Tuesday in the Atlantic Ocean, but it does not pose a threat to land.
A hurricane watch in effect for parts of Florida, as Gov. Rick Scott urges residents up and down the Interstate 95 corridor to start preparing for "direct impacts" of Hurricane Matthew.
The fiercest Caribbean storm in almost a decade ripped into Haiti's southwestern peninsula early on Tuesday with 145 mile-per-hour winds and storm surges, killing at least one person and damaging homes.
Hurricane Matthew, the most powerful storm to strike the Caribbean in nine years, made landfall on Tuesday in southeastern Cuba.
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Hurricane Matthew intensified en route to Haiti on Monday, bringing 140-mile-per-hour (220 kph) winds and torrential rain that could wreak havoc in Caribbean nations that had yet to evacuate residents of risky coastal homes.