Hurricane Marie created heavy surf along Mexico's northern Pacific coast Monday, even as it weakened slightly to a powerful category-4 storm, the U.S. National Hurricane Center reported, adding the storm likely would create big waves along the U.S. west coast later this week. The Miami-based NHC said Marie had sustained winds of up to 230 kilometers per hour (kph) and was located about 750 kilometers southwest of the southern tip of the Baja California Peninsula. It said the storm was moving west-northwest at 19 kph. Hurricane-force winds extended up to 95 kilometers away from the storm's center, with tropical storm-force winds reaching out to 500 kilometers. Waves created by Marie were affecting much of Mexico's Pacific coast, and the NHC warned of dangerous surf and rip-current conditions.