Live updates from Bay Area storm: Flood sirens are activated as San Anselmo creek begins to rise, according to sheriff’s office

ABC7 News meteorologist Drew Tuma will have live updates on the storm as it enters the Bay Area on Sunday starting at 2 p.m. You can watch on abc7news.com or our ABC7 News Bay Area streaming apps for Roku, Amazon Fire, Apple TV, and AndroidTV.

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Warnings and evacuation orders

MARINE COUNTY

Police passed through San Anselmo to clean the streets and tell businesses to close for the day.

In a video tweeted by ABC7 News reporter Liz Kreutz, you can hear officers driving through their flood alarms:

San Anselmo Creek is known as the zero point for flooding, and officers have warned it was starting to rise on Sunday. Flood sirens were activated in Ross, San Anselmo and Fairfax. Residents are urged to avoid the area and seek higher ground if you are near creeks or streams.

The stream last rose on its banks in 2005 and inundated nearby businesses.

Here’s what it looks like at 4 p.m. on Sunday:

In Mill Valley, the Marin County Sheriff says there is flooding in the Sycamore Triangle area. “Residents of flood-prone areas are urged to move their vehicles to higher ground at the Mill Valley Community Center,” the agency said on Twitter.

SAN FRANCISCO

Mandatory evacuations are in place in San Francisco after a 100-foot tree leaned toward three structures on 9th Avenue, according to San Francisco firefighters.

SAN MATEO COUNTY

Evacuation warnings have been turned into evacuation orders for areas in San Mateo County, CAL FIRE tweeted on Sunday morning.

Flash flood monitoring and wind advisories from the National Weather Service now increase the potential for debris flows, downed trees and power outages in affected areas.

The evacuation warnings are effective immediately, according to a joint statement from CAL FIRE, the San Mateo County Sheriff’s Department, San Mateo County Fire Department and San Mateo County.

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Evacuation orders concern the following areas:

  • SMC-E019 South Coast Area, which includes Ano Nuevo State Park, Whitehouse Canyon Road, and areas south of Gazos Creek Road east of Highway 1
  • SMC-E038 South Coast area, which includes Butano State Park and the community of Barranca Knolls, west of Cloverdale Road
  • The communities of Loma Mar and Dearborn Park in the SMC-E018 area
  • The community of Butano Canyon in the area SMC-E098
  • These areas were upgraded to evacuation orders at 8 a.m. on Sunday. Officials say as Sunday morning progresses and winds and rain increase, downed trees, tree branches and mudslides could impact evacuations. Electricity could also be impacted.

    Half Moon Bay High School will open at 8 a.m. Sunday as a Temporary Evacuation Point (TEP). The school is located at 1 Lewis Foster Dr., Foster City.

    These areas improved evacuation orders at 8 a.m. on Sunday. Officials say as Sunday morning progresses and winds and rain increase, downed trees, tree branches and mudslides could impact evacuations. Electricity could also be impacted.

    Half Moon Bay High School will open at 8 a.m. Sunday as a Temporary Evacuation Point (TEP). The school is located at 1 Lewis Foster Dr., Foster City.

    SANTA CRUZ COUNTY

    Evacuations are expected in high-risk areas of Santa Cruz County, sheriff’s deputies are going door-to-door to notify residents and a shelter for evacuees is expected to open Sunday morning, a county official said on Saturday.

    County residents are encouraged to call (831) 454-2181 with any questions regarding evacuations and resources, and the county plans to open a shelter at 8 a.m. Sunday, according to Nicole Coburn, deputy county administrator.

    “The sheriff’s office began door-to-door on Saturday in anticipation of evacuations in high-risk areas,” Coburn said. MPs are contacting homes in low, high-risk areas that have the highest evacuation potential, the deputy administrative official said.

    Residents are encouraged to search for their evacuation zone at https://community.zonehaven.com. Residents are also encouraged to register landlines, cell phones, or VoIP phones with CodeRED by visiting https://www.scr911.org/ and signing up for notifications, or by sending SCR911 to 99411.

    “We are finalizing the plans for the location of the evacuee shelter and as soon as we have solidified the site, we will notify the public” of the location, Coburn said.
    Debris flows are masses of mud, rocks, boulders, trees, and sometimes houses or vehicles that move quickly. They move quickly and are often fatal to those who get in their way.

    According to the county, the only way to avoid debris flow is to get to safety before any debris flow event occurs.

    CAL FIRE said if you evacuate Santa Cruz County, there is a temporary evacuation location.

    For more information on debris flows, residents can visit here.

    County residents are advised to seek refuge with friends and family and are asked to follow local news or county social media accounts at www.twitter.com/sccounty or www.facebook.com / countyofsantacruz for updates and additional information.

    Bay Area Weather Advisory

    The National Weather Service issued several weather advisories for various parts of the Bay Area starting on Sunday.

    Flash flood watch is in effect Sunday for North Bay from 5 a.m. to 11 p.m., for the Santa Cruz Mountains from 1 to 11 p.m. and for Monterey County from 5 to 4 a.m. on Monday.

    Heavy rains could cause debris flows and flash floods in areas recently burned by fires due to poor drainage.

    There may be a potential for mudslides and leaching over steep terrain in these areas, according to the National Weather Service.

    There are also wind advisories in effect Sunday in North Bay from 2 a.m. to 5 p.m., in San Francisco, East Bay and South Bay from 5 a.m. to 8 p.m. and in Monterey County from 11 a.m. to 11 p.m.

    Southerly winds are expected to be 15 to 25 mph with occasional gusts up to 35 to 45 mph. Some areas may see gusts of up to 60 mph.

    Residents are advised to secure loose outdoor objects and structures and be aware that tree branches could be knocked over, resulting in power outages.

    Driving can be difficult for high profile vehicles.

    A high wave advisory will be in effect for the coastal parts of the Bay Area from 11 p.m. Sunday to 11 a.m. Tuesday.

    There will be an increased risk of sneaker waves, large breaking waves, rip currents and upwelling.

    Bay City News contributed to this report.

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