CHAMELA, Mexico — Only a day after menacing Mexico as one of history's strongest storms, Hurricane Patricia left surprisingly little damage in its wake Saturday and quickly dissipated into an ordinary low-pressure system that posed little threat beyond heavy rain. The hurricane's most powerful punch landed on a sparsely populated stretch of Mexico's Pacific Coast before the system crashed into mountains that sapped its potentially catastrophic force. The popular beach city of Puerto Vallarta and the port of Manzanillo were spared the brunt of the violent weather.