Hurricane Polo swirls off Mexico’s Pacific coast as a major Category 3 storm. See its path.

Hurricane Polo was downgraded to a Category 3 storm as its intensity fluctuated hundreds of miles off Mexico’s southwestern coast on Saturday.

The storm still remains a major hurricane, the Miami-based National Hurricane Center said in an update Saturday night, and it is expected to make landfall in Baja California on Monday. A hurricane warning is in effect for a stretch of northwestern Mexico and the southwestern U.S. from Punta Abreojos in Baja California Sur to Santa Fe, New Mexico.

The storm had maximum sustained winds of 120 mph. Hurricane-force winds were extending outward up to 40 mph from the center of the storm, while tropical storm force winds extended outward up to 160 mph. The storm was inching slowly northwest.

Elsewhere in the Pacific, Nolo strengthened into a hurricane as it moved past Hawaii’s Big Island this weekend, bringing heavy rain to Hawaii’s Big Island.

Maps show Hurricane Polo’s projected path

Polo’s core on Saturday was about 335 miles south-southwest of Cabo San Lucas at the tip of the Baja California peninsula. It was heading northwest at 10 mph.

The storm is expected to move north on Sunday. By Monday, Polo is forecast to turn northeast and make landfall in Baja California Sur and then move across northwestern mainland Mexico by Tuesday.

The State Department, citing forecast models, said the storm is expected to weaken to a Category 1 storm before making landfall. It will then continue northeast into southern Sonora, the State Department said. The hurricane center noted, however, that despite weakening, Polo is still expected to be a “strong hurricane” when it reaches Baja California Sur.

Polo could produce 4 to 8 inches of rain, and up to 10 inches in isolated areas, across parts of Baja California Sur, the hurricane center said, cautioning the rain “may produce life-threatening flooding and mudslides, especially in areas of steep terrain.”