After growing into a hurricane Saturday, Orlene quickly added power, and had maximum sustained winds of 125 mph (205 kph) on Sunday, according to the U.S. National Hurricane Center (NHC). That was slightly below its Category 4 peak of 130 mph (215 kph) earlier in the day.
The storm was forecast to roar past the Islas Marias, a former prison colony being developed as a tourist draw, late Sunday or early Monday and then head for a sparsely populated, lagoon-dotted stretch of mainland by late Monday.
Orlene was centered about 95 miles (155 kilometers) southwest of Cabo Corrientes—a point of land that juts into the Pacific just south of Puerto Vallarta—and was headed north at 8 mph (13 kph) early Sunday.
A hurricane warning was in effect from San Blas to Mazatlan.
The center said the storm would likely strengthen more Sunday, then begin weakening as its moved closer to land. But it was still projected to hit as a hurricane.
It could bring flood-inducing rainfall of up to 10 inches (25 centimeters) in some places, as well as coastal flooding and dangerous surf.
Puerto Vallarta closed its port to ship and boat traffic Saturday as a precaution.
Mexico’s National Water Commission said Orlene could cause “mudslides, rising river and stream levels, and flooding in low-lying areas.”
The hurricane center described Orlene as a small storm, with hurricane-force winds extending out about 15 miles (30 kilometers) from the center and tropical storm-force winds out to 70 miles (110 kilometers).