SAN FRANCISCO (KGO) -- The first major storm of the season is soaking the Bay Area. The rain and wind knocked out power, delayed flights and flooded roads.
Precipitation started falling across the North Bay at around 9 p.m. Thursday and moved south into San Francisco and Oakland by late Friday morning. Wind will be the big issue over the weekend.
WATCH LIVE: Track the rain with Live Doppler 7
A wind advisory has been issued for 2 p.m. Saturday through 2 a.m. Sunday, bringing gusts of up to 40 to 50 mph. There's a possibility that winds could down trees and powerlines.
One of the biggest issues from Friday's storm was power outages that affected more than 20,000 customers, mostly in the East Bay.
In Point Richmond, overnight rains led to a spark that blew a transformer, followed by an explosion and then a fire that burned through the top portion of a power pole. The whole episode knocked out power to dozens of homes and businesses.
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Contra Costa College in San Pablo also had a power outage, prompting the cancellation of classes for the day.
Also in the East Bay, there were two single car accidents just after noon on Highway 24 in Orinda. The CHP said no one was injured, but they were asking drivers to be extra careful and slow down.
The North Bay had its share of issues from the rain Friday morning. There were no landslides, but some car accidents. In San Rafael, an overturned big rig blocked traffic for hours.
MORE: Storm causes power outages in East Bay
There was a warning along the coast as strong winds push bigger waves farther on shore.
In the Santa Cruz Mountains, a light, but steady rain all day brought some runoff. There was no major flooding or any major mudslides.
MORE: Slick roads lead to crashes in North Bay
BART suffered major delays Friday morning as the storm hit the Peninsula. A power outage caused BART to lose control of its track system around the Daly City station. Crews had to manually switch cars for most of the morning, which means they had to slow down, causing delays of up to an hour for passengers heading south of Daly City. Delays of up to 10 minutes continued through most of the morning.
RELATED: The ABC7 News Storm Impact Scale explained
The storm canceled a lot of flights out of SFO Friday, a total of 81 so far, and most in the morning. Later in the afternoon a lot of flights were delayed, about half an hour for departing flights and an hour for arrivals.
Representatives at Oakland and Mineta San Jose International airports say the weather is not impacting their flights.
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