MEXICO CITY — Hurricane Patricia, a storm of record-setting ferocity, proved no match for the Sierra Madre Occidental Mountains.

Patricia smashed ashore at almost the perfect location, meteorologists and Mexican officials said Saturday, making landfall with 160-mph winds on a sparsely populated stretch of Pacific coastline and then colliding with a tall, rugged mountain range that disrupted its swirling momentum and sapped its strength.

Confronted by those mountains, Patricia crumpled, rapidly shrinking from a Category 5 hurricane to a tropical depression as it limped inland. Still wary of possible flooding and landslides, Mexican officials were reluctant to “declare victory,” Transportation Secretary Gerardo Ruiz Esparza said at a Saturday news conference. But with no deaths reported and only minor damage, he said, “there was, let’s say, good fortune.”

From the beginning, Patricia has been an unusual creature. It grew astonishingly quickly at sea, at one point registering 200-mph winds — making it the strongest hurricane ever recorded in the Western Hemisphere. But, in some respects, it was puny.

When Patricia arrived in Mexico, its hurricane force winds extended only 35 miles from its center and its eye was only five miles across, limiting the area impacted by its strongest force, said Dennis Feltgen, a spokesman for the National Weather Service in the United States, which closely tracked the storm.

The storm also slipped neatly between two population centers, missing them both — the resort town of Puerto Vallarta to the north, and the port town of Manzanillo to the south.

“Had something like that hit a populated area like Puerto Vallarta, you would be looking at catastrophic destruction and probably fatalities,” Feltgen said in an interview. “We were very fortunate. It could have been much worse.”