Meanwhile, Tropical Storm Aletta weakened into remnant low-pressure system in the Pacific, far from the Mexican coast.
Although authorities established a surveillance zone to follow the trajectory of the hurricane northward along Mexico's western coast, there were no evacuations of tourist spots like Acapulco, Puerto Vallarta and Cabo San Lucas.
National Hurricane Center advisory at 8 a.m.
The track forecast brings the center of Bud closest to the southern tip of Baja California and the area around Cabo San Lucas from Thursday into Friday morning, when maximum sustained winds are predicted to be about 55 miles per hour. In addition, ocean swells generated by Bud will continue to affect portions of the coast of southwestern Mexico during the next few days. Tropical storm conditions are possible within the watch area beginning this afternoon, June 11. NOAA predicts that seven to 12 hurricanes will form.
The first storm of the 2018 season was Subtropical Storm Alberto, a sprawling and somewhat disorganized system that made landfall in the Florida Panhandle on Monday, May 28, Memorial Day. At that time the eye of Hurricane Bud was located near latitude 16.4 degrees north and longitude 106.5 degrees west.
Bud's center is now just over 300 miles south-southeast of Cabo San Lucas, Mexico, moving northwestward.
As of the Tuesday morning advisory, winds were up to 130 miles per hour making Bud a major category 4 hurricane.
Hurricane Bud became the second straight storm to reach Category 4 intensity following Aletta, which attained such strength Friday.
Forecasters said the storm could strengthen a bit more before a slow weakening trend started Tuesday.