Hurricane Bud, with winds of 110 miles (177 kilometers) per hour in the Pacific, may become a major storm late today and will probably go ashore on the southwest Mexican coast tomorrow.

Mexico issued hurricane warnings from Manzanillo to Cabo Corrientes, where high winds and heavy rains are expected overnight, the U.S. National Hurricane Center said in an advisory shortly before 5 p.m. New York time.

“Preparation to protect life and property should be rushed to completion,” the center said. “Swells generated by Bud are beginning to affect portions of the southern and southwestern coasts of Mexico.”

The storm, a Category 2 on the five-step Saffir-Simpson scale, is just below the 111-mph threshold of a major hurricane. It was located about 200 miles south-southwest of Manzanillo and moving northeast at 9 mph, the center said in an intermediate advisory at 8 p.m. New York time.

A U.S. Air Force reconnaissance plane that flew through Bud earlier today found that maximum sustained winds remained near 110 mph, with some “some strengthening possible tonight or tomorrow morning,” the center said in the 8 p.m. advisory.

Forecasters had predicted the core of Bud would remain offshore before it reversed course into the open ocean. Now Bud is expected to go ashore between Puerto Vallarta and Manzanillo and then back out to sea.

Manzanillo’s port is known for container and rail facilities, as well as being a destination for cruise ships, according to the Manzanillo Sun website.

Heavy Rain

The storm may drop 4 to 6 inches of rain across southwestern Mexico with as much as 10 inches in some areas, the center said.

“These rainfall amounts could produce life-threatening flash floods and mudslides,” the 8 p.m. advisory said.

Tropical-storm force winds of at least 39 mph reach out 115 miles from Bud’s eye. The storm’s hurricane-strength winds extend 35 miles from its core.

The hurricane center is also monitoring a low-pressure area over northern Cuba and southern Florida that has a 40 percent chance of developing in the next 48 hours. It may organize into a tropical or subtropical system over the weekend as it moves northeast into the Atlantic, the center said. Heavy rain may fall in parts of Florida, the Bahamas, Cuba and the Cayman Islands.

To contact the reporter on this story: Brian K. Sullivan in Boston at bsullivan10@bloomberg.net

To contact the editor responsible for this story: Dan Stets at dstets@bloomberg.net