SAN FRANCISCO (KRON) – The latest breaking news, weather, and traffic updates as an Atmospheric River bringing heavy rains and gusty winds through the Bay Area Monday.

10:20 p.m.

The city of Vacaville is warning residents of urban and small stream flooding until 6:30 a.m. on Tuesday.

9:40 p.m.

A large tree is blocking the eastbound lanes of Clayton Rd. at Rosal Ln. in Concord.

Officials are on the scene.

9:15 p.m.

From midnight to 9 p.m. on Monday, San Francisco received 2.34 inches, and more is on the way.

The record rainfall for Dec. 13 is 2.99 in San Francisco.

8:30 p.m.

Chain of Lakes Drive E. is closed from JFK Dr. to Fulton Streets in San Francisco’s Golden Gate Park due to flooding.

8:15 p.m.

A Flood Advisory was issued in San Francisco until 9:45 p.m. — Minor flooding is expected on highways, streets, and underpasses.

7:42 p.m.

A Special Marine Warning includes the waters from Point Reyes to Pigeon Point until 8:15 p.m.

5:18 p.m.

Cal Fire CZU has issued evacuation warnings in the San Lorenzo Valley area and CZU burn scar as rainfall continues.

Residents are encouraged to look up their evacuation zone to be prepared.

The following zones are under a warning (FIND MAP HERE):

BOU- E005


If you need to evacuate, be sure to:

  • Follow instructions from local officials, including travel routes
  • Wear protective clothing and sturdy shoes
  • Take emergency go-bag or disaster supply kit
  • Lock your home
  • Shut off water, gas, electicity if instructed to do so
  • Let others known when you left and where you are going
  • Make arrangements for pets and livestock, if necessary

5:10 p.m.

A Flood Watch has been issued by the National Weather Service from 7 p.m. through 10 p.m. on Monday.

The areas impacted are:

  • San Francisco
  • San Francisco Bay Shoreline
  • San Francisco Peninsula Coast
  • East Bay Interior Valleys
  • East Bay Hills and the Diablo Range
  • Santa Cruz Mountains
  • Santa Clara Valley, including San Jose
  • Northern Monterey Bay
  • The cities of Livermore, Scotts Valley, Pacifica, San Francisco, Hayward, Watsonville, Fremont, Live Oak, Santa Cruz, San Ramon, Antioch, Berkeley, San Jose, Blackhawk, Walnut Creek, Daly City, Boulder Creek, Concord, Day Valley, Pittsburg, Pleasanton, and Oakland

5:03 p.m.

A large oak tree fell on top of a playground in Alameda.

It happened at Lincoln Park on High St. at Santa Clara Ave.

The playground and pickleball court fence were damaged.

4:30 p.m.

Flash Flood Watches are in effect for:

  • Alameda County until 10 p.m.
  • Napa County until 7 p.m.
  • Sonoma County until 7 p.m.
  • Santa Cruz mountains until 6 p.m.

4 p.m.

After a large boulder fell and rolled across the roadway, Ice Cream Grade has been closed in both directions.

No injuries were reported.

Public Works crews are working to remove the boulder.

3:53 p.m.

Nearly 8,000 customers are without power across the Bay Area, according to PG&E:

  • San Francisco: 1,058
  • Peninsula: 3,544
  • North Bay: 416
  • East Bay: 1,935
  • South Bay: 934
  • BAY AREA TOTAL: 7,887

3:45 p.m.

A Flood Advisory has been issued for the Santa Cruz mountains. It will remain in effect until 6 p.m.

3:45 p.m.

Highway 1 at Bean Hollow Road near Pescadero has been closed in both directions due to a large tree in the roadway.

3:42 p.m.

Highway 92 near Half Moon Bay has reopened the eastbound lanes after being closed due to flooding.

Officials say there is no estimated time of reopening the westbound direction.

3:23 p.m.

The East Bay Regional Park District has closed the Alamo Canal Trail at the I-580 under crossing temporarily.

Officials expect it to remain closed through Wednesday, Dec. 15.

3:23 p.m.

Fire crews and the county public works are working to remove a tree that fell on Pescadero Creek Road at Memorial County Park.

No injuries were reported.

3:15 p.m.

The Santa Rosa Fire Department reported that a Flood Watch is in effect until 7 p.m. on Monday for residents in the North Bay Interior Valleys and North Bay Mountains.

In addition, this Flood Watch is in effect in Santa Rosa.

3:07 p.m.

One person was rescued from a home in Hillsborough on Monday, according to the San Mateo Consolidated Fire Department.

The department posted a video to Twitter showing the ongoing flooding.

2:58 p.m.

BART Delays: A 20-minute delay has been reported systemwide to all destinations.

2:33 p.m.

Around 4,000 people were without power in part of Mountain View due to a large power pole down.

1:33 p.m.

Large power pole has fallen at Rengstorff and San Luis avenues. Traffic has been stopped in both directions.

NWS Bay Area updated Flash Flood Watch for Burn Areas.

1:09 p.m.

Firefighters help 2 people trapped in their vehicle on Highway 92.

12:50 p.m.

Flooding on CA-92 between CA-1 S and Lower Skyline Blvd in Half Moon Bay. Eastbound Lanes is Now Open. All Westbound Lanes Remain Closed.

12:30 p.m

12:10 p.m.

The Flood Advisory has expired.

Hwy 92 near Half Moon Bay between Hwy 1 and Route 35 closed due to flooding.

12:02 p.m.

11:15 a.m.

Alert for those in San Mateo.

11:00 a.m.

Flash Flood Warning including San Mateo County, CA, Santa Cruz County, CA until 11:45 AM PST

10:40 a.m.

Flooding on CA-92 between CA-1 S and Lower Skyline Blvd in Half Moon Bay. All Lanes Closed in Both Directions.

10:35 a.m.

Hwy 92 is now closed.

10:33 a.m.

The San Francisco Dept. of Public Health is reporting some COVID vaccination sites may be closed due to the severe weather. You are encouraged to check with your nearest location if they are open before heading out.

10:15 a.m.

The National Weather Service says they are getting several reports of downed trees blocking roadways, especially in Santa Cruz County where wind gusts are ranging between 40 and 50 mph.

10:00 a.m.

Flooding on Eastbound and Westbound CA-12 between Watmaugh Rd and Fremont Dr in Sonoma County. All Lanes Remain Closed in Both Directions.

According to Cal Fire CZU, a small mudslide temporarily closed a portion of Felton Empire Road. No injuries were reported. One lane is open at this time.

9:55 a.m.

Cal Fire is warning of pools of water across roadways in San Mateo County.

9:50 a.m.

KRON4′ Reyna Harvey has your latest traffic check.

9:16 a.m.

Flooding on CA-121 between Arnold Dr and Eighth St in Sonoma County. All lanes closed in both directions.

9:08 a.m.

SFO reporting 44 flight delays.

9:04 a.m.

The National Weather Service is continuing to monitor creek levels.

9:00 a.m.

  • SB-680 south of Vargas Rd in Fremont lanes continue to be blocked
  • NB-880 San Leandro-Oakland 47 min. drive
  • WB-580 Castro Valley to maze – 40 min. drive

8:45 a.m.

Kevin “Coop” Cooper is live from South Lake Tahoe with the latest on weather conditions in the Sierra.

8:37 a.m.

SFO is reporting 20 delays.

8:20 a.m.

Eyton Wallace reports live from Placer County where a winter wonderland has taken form.

8:12 a.m.

Latest rain total maps from the National Weather Service:

7:56 a.m.

7:53 a.m.

Some current drive times:

  • 40 min. Crockett to the maze
  • 101 – from 85 Menlo Park – up to 55 min.
  • 20 min. drive from Walnut Creek to I-580

7:46 a.m.

Traffic crash with injuries and overturned vehicle on NB-13 south of Park Blvd. in Oakland; right lane blocked.

Downed overhead wires causing delays SF Muni N-Judah; outbound N trains switching back at 19th Ave; bus shuttles provided.

Traffic crash SB-880 at Marina in San Leandro.

7:27 a.m.

UPDATE: Traffic crash and spill on NB-101 south of W. Railroad Ave in Cotati – right lane open, far-right lane remains blocked.

7:10 a.m.

SFO reports 18 flight delays, 5 cancellations.

Ongoing: Traffic crash WB-80 under CA-12 in Fairfield; right lanes remain blocked.

Ongoing: Crash SB-680 south of Vargas in Fremont; left lanes remain blocked

7:08 a.m.

7:05 a.m.

BART is reporting a 10-minute delay to all destinations due to weather conditions.

6:50 a.m.

Downed tree reported EB-580 at 98th Avenue in Oakland.

More traffic hot spots:

6:48 a.m.

A portion of Ashby Avenue in Berkeley near I-580 is closed due to flooding. Westbound direction of Ashby, west of Seventh St., will be closed for the next several days, police said. Avoid the area.

6:43 a.m.

Standing water reported in far right lane of Bay Bridge headed into San Francisco.

6:35 a.m.

6:17 a.m.

Traffic collision and spill, NB-101 south of W Railroad Ave in Cotati. Right Lanes Blocked.

SB-680 south of Vargas Rd. in Fremont – Sig Alert – several lanes blocked.

Major BART delays on the Richmond line in Berryessa; Richmond and Millbrae directions.

Traffic collision NB-680 north of Willow Pass Rd. in Concord.

6:11 a.m.

SFO is reporting 16 flight delays and 5 cancellations. Check the latest with your specific airline.

6:05 a.m.

The Atmospheric River is making Monday morning’s commute slick and dangerous. KRON4’s Reyna Harvey shows you some hot spots.