Weekend Storm Downed Trees, Wires Across South Bay: See

SANTA CLARA COUNTY, CA — The Santa Clara County Fire Department responded to "numerous and widespread reports of trees and wires down" during Sunday's storm.

The incidents included a tree crushing a passing vehicle in Los Altos and a tree teetering dangerously close to electrical wires in neighboring Los Altos Hills.

In Saratoga near Interstate 680, a power pole was swaying over the roadway.

Meanwhile, at the Levi's Stadium in Santa Clara, where the San Francisco 49ers played the Indianapolis Colts on Sunday Night Football, several porta potties blew across the parking lot.

A power outage in Santa Clara affected 928 customers on Sunday night. Power was restored before midnight.

It's "been a memorable past 24 hours for the Bay Area as the long-talked-about atmospheric river rolled through the region," the National Weather Service said before dawn Monday. "We literally have gone from fire/drought conditions to flooding in one storm cycle."

San Francisco saw its wettest October day ever and its fourth-wettest day overall since the Gold Rush, according to the weather service.

The storm was dubbed both an atmospheric river and bomb cyclone. Atmospheric rivers are "relatively long, narrow regions in the atmosphere — like rivers in the sky," according to the National Oceanic and Atmospheric Administration.

A bomb cyclone occurs when a storm experiences bombogenesis, meaning it rapidly intensifies over a 24-hour period, according to NOAA.

See More: 14 Images Of California's Powerful Storm: Flooding, Debris & More