Tropical Storm Gamma has formed over the Western Caribbean, the US National Hurricane Service said on Friday.
According to meteorologists, the hurricane is approaching Yucatan and is projected to reach the peninsula on Saturday.
The storm was located about 220 kilometres (135 miles) south-southeast of Cozumel, Mexico, bringing winds of about 65 kilometres (40 miles) per hour.
Tropical storm warnings have been issued for large portions of Yucatan, from Punta Herrero to Cabo Catoche.