Tropical Storm Richard was upgraded to a hurricane on Sunday.
The U.S. National Hurricane Center in Miami says that Richard is expected to cross the coast of Belize on Sunday night, and then move over land.
Hurricane warnings are in effect for Belize, while the east coast of Mexico's Yucatan Peninsula is under a hurricance watch.
Reports indicate that maximum sustained winds have increased to nearly 150 km/h, with higher gusts.
Richard is a Category One hurricane on the Saffir-Simpson scale.
This was the 17th named storm of the busy Atlantic hurricane season. It's now the 10th hurricane.
The U.S. National Hurricane Center predicts that Richard will bring dangerous storm surge, heavy rain, flash floods, mudslides, and strong winds.
With files from Lisa Varano