Hurricane Orlene roars toward Mexico's Pacific coast
Orlene lost some strength after roaring over the Islas Maria, a former prison colony being developed as a tourist draw. The main island is sparsely populated, mainly by government employees, and most buildings there are made of brick or concrete.
The hurricane's winds slipped back to 100 mph (155 kph) early on Monday, according to the US National Hurricane Centre.
Authorities along the coast suspended classes, closed seaports and set up shelters, and rain was falling in Mazatlan.
A hurricane warning was in effect from San Blas to Mazatlan.
The government of Jalisco state, where Puerto Vallarta is located, suspended classes on Monday in towns and cities along the coast.
The centre said the storm would likely 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 centimetres) in some places, as well as coastal flooding and dangerous surf.
Mexico's National Water Commission said Orlene could cause "mudslides, rising river and stream levels, and flooding in low-lying areas." The hurricane centre said hurricane-force winds extended out about 15 miles (30 kilometres) from the centre and tropical-storm-force winds out to 70 miles (110 kilometres).
The storm peaked early on Sunday at Category 4 force with maximum sustained winds of 130 mph (215 kph).
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