Hurricane Jimena heads for Mexico's Baja region
The fierce Category 4 storm was expected to make landfall late Tuesday over the peninsula before heading along the Baja coast toward California, forecasters said.
Heavy bands of intermittent rain moved across Los Cabos on Monday evening.
At least 10,000 families will be removed from potential flood zones, said Francisco Cota, the local director of Civil Protection. He said 60 evacuation shelters would be set up.
"I think it's going to be a substantial hurricane by the time it approaches," said Richard Pasch of the National Hurricane Center in Miami.
By 8 p.m. PT on Monday, Jimena had strengthened to a near-Category 5 storm with maximum sustained winds of nearly 250 km/h and was moving northwest at about 15 km/h. It was centred about 390 kilometres south of Cabo San Lucas.
Farther south, Jimena kicked up surf along Mexico's mainland western coast and generated strong winds that bent and uprooted trees in the resort town of Zihuatanejo.
A tropical storm watch was issued late Monday for the country's western coast from Altata to Huatabampito.
With files from The Associated Press