SAN FRANCISCO (KGO) -- The Bay Area saw significant storm impacts as an atmospheric river brought heavy rain, urban and river flooding, and strong winds to the region.
Rain is spreading across the Bay Area Thursday with afternoon thunderstorms and flooding possible as strong winds will bring chances of downed trees.
TIMELINE: Flooding, damage expected as atmospheric river brings Level 3 strong storm
Flooding along Highway 1 near Point Reyes Station has shut down the road, CHP says.
It's shut down between Bear Valley Road and Point Reyes Station, and CHP says to use an alternate route.
There is no estimated time for it reopening.
Sir Francis Drake Boulevard in Point Reyes Station is also closed from Highway 1 to Bear Valley Road due to flooding.
A large pothole has formed at the intersection of Lombard and Gough Street in San Francisco as heavy rain continues, SFFD says.
The San Francisco Fire Department said it's about five feet by four feet. It's been causing a major headache for drivers trying to get around it to get to work or school.
SFFD originally tweeted that the hole was a sinkhole but later gave an update that it was a pothole.
ABC7 crews on scene saw multiple Waymo autonomous vehicles driving straight through at full speed, ignoring Public Works vehicles trying to block off the area.
Officials are urging drivers to avoid the area and to expect some traffic delays while repairs are being made. One crew told ABC7 the pothole was actually a failed trench.
Elsewhere in the city, there was flooding at 18th and Folsom, but a Good Samaritan came to save the day and unclogged the drain with his own set of rainboots before any Public Works officials showed up.
"Oh I just cleared the drain, you know people in the city when you see a drain clogged, you want to help out, just clear it out, people walking through here and that water is pretty is deep, just clear it out," the man said.
The Guerneville School District in Sonoma County is closed Tuesday due to weather conditions.
There will be no virtual or in-person classes for the school district, according to the Sonoma County Office of Education.
According to the National Weather Service, an atmospheric river will continue to bring heavy rain, flooding, and strong winds throughout the day.
The Arroyo Corte Madera del Presidio Creek is one of the main creeks flowing through Mill Valley, which runs alongside many homes and businesses. Residents were watching the creek closely on Monday ahead of the atmospheric river.
The Mill Valley Police Department sent a weather advisory to all its residents urging them to be prepared following the National Weather Service Flood Watch alert for Marin County and the City of Mill Valley.
Earlier Monday, crews worked to remove a large oak tree that fell just outside the Steele Lane Elementary School in Santa Rosa.
With strong winds expected through Tuesday, officials say it's likely even more will tumble.
"We anticipate certainly some roadside sluffing, debris in the roadways. So again when people are driving be really careful and conscious out there," said Cyndi Foreman, Sonoma County Fire District Division Chief.
The Southern Marin Fire District is ready to deploy an additional five engines, and the local office of emergency services water team is on standby.
