Hurricane Hilary is expected to slam into Southern California on Sunday as a rare tropical storm, unleashing floods, fierce winds and heavy downpours as residents evacuate, parks and beaches close and first responders brace for water rescues.

Hilary is now a Category 1 storm churning maximum winds of 85 miles per hour as it barrels north-northwest at a speed of around 20 mph, according to the National Hurricane Center. It was about 385 miles south from San Diego as of 2 a.m. local time Sunday.