Cruise lines are currently changing their itineraries in the Caribbean as the deadly weather system named Tropical Storm Earl headed towards Yucatan peninsula in Mexico.
The storm grew to maximum sustained wind speeds of 70 miles per hour and is expected to become a hurricane. Costa Maya, Belize (close to the Guatemalan border) and Honduras' Bay Islands are under a hurricane warning.
The US National Hurricane Centre in Miami said Earl was threatening to bring heavy rains, flooding and high winds to Honduras, Belize and Mexico.
At least nine people died on Monday due to extreme weather in Haiti and the Dominican Republic as the storm passed over the Caribbean.
Six of the victims were passengers on board a bus that caught fire in the town of Nagua on the north coast of the Dominican Republic when it was hit by tumbling power lines. Three people drowned when their tour boat capsized.
The Foreign and Commonwealth Office issued alerts for travellers to Belize, Honduras and the Yacatan peninsula from Wednesday.
It warns that the tropical cyclone developing in the Caribbean Sea may bring hazardous sea and weather conditions to the region. This follows tropical storm warnings for Jamaica and the Cayman Islands.