SAN FRANCISCO — A powerful storm expected to pack hurricane-force winds and heavy rain triggered emergency preparations across Northern California on Wednesday, with residents gathering sand bags, crews clearing storm drains and San Francisco school officials canceling classes for the first time since 9/11.
As much as 8 inches of rain could fall on coastal mountains over a 24-hour period starting late Wednesday, the National Weather Service said. Ski resorts in the northern Sierra Nevada could get more than 2 feet of snow.
“It’s a short amount of time for that amount of water,” Weather Service forecaster Diana Henderson said. “We are anticipating some localized flooding, maybe some downed trees and downed power lines. It could have an effect on a wide range of people.”
The storm is expected to be one of the windiest and rainiest in five years and could also cause debris slides, especially in areas affected by this year’s intense and widespread wildfires.
Public schools in San Francisco and Oakland and some private schools in the Bay Area planned to stay closed Thursday.