CNN.com: CNN) -- A tropical storm formed in the Caribbean Friday and is expected to move across the coast of Belize Saturday afternoon or night.
Tropical Storm Harvey has maximum sustained winds of 40 mph, with higher gusts, according to the Miami-based National Hurricane Center.
The storm is forecast to strengthen somewhat before its center reaches Belize.
A tropical storm warning is in effect for the coast of Belize and for the Bay Islands of Honduras, which Harvey is predicted to pass near Friday night.
A tropical storm watch is in effect for the coasts of Honduras, Guatemala and the southeastern coast of the Yucatan Peninsula, from Punta Gruesa south to Chetumal.