A tropical storm warning has been issued for the southern portion of Mexico's Baja California peninsula as Tropical Storm Patricia approaches.

The warning, issued early Tuesday, covers the area from Buenavista to Agua Blanca and includes Cabo San Lucas. A tropical storm watch remains in effect for an area along the east coast of the peninsula from Buenavista to La Paz and along the west coast from north of Agua Blanca to Santa Fe.

Patricia's maximum sustained winds are near 60 mph with some strengthening possible. The tropical storm is centered about 155 miles south-southeast of the peninsula and is moving north near 6 mph.

Patricia is expected to make its closest approach to the peninsula late Tuesday or early Wednesday.

Patricia became a named tropical storm late Sunday.

On Monday, the Mexican government issued a tropical storm watch, and the port of Cabo San Lucas was closed to small craft. Mayor Rene Nunez said officials were evaluating whether to evacuate families in low-lying areas.