A cold front swept through the region on the 7th bringing gusty southerly winds, heavy rain, and flooding. Winds brought down trees and power lines across the greater Bay Area resulting in injuries to two people in San Francisco. Downed power lines also left over 1,000 people without power in the Santa Cruz Mountains as well as causing several additional power outages across San Francisco. A line of strong showers moved over San Francisco bringing urbanized flooding to the city and strong winds. Roads as well as  municipal stations were underwater.

Debris Flow in MONTEREY, CALIFORNIA
From 07-DEC-19 10:25:00 to 07-DEC-19 11:25:00 (PST-8)
Location: GORDA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

CHP reporting mud/dirt/rock along CA Hwy 1 near Limekiln Campground. Reports of full closure of northbound and southbound traffic for another hour or so.

Flood in SAN FRANCISCO, CALIFORNIA
From 06-DEC-19 22:37:00 to 06-DEC-19 23:07:00 (PST-8)
Location: CRISSY AAF
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 1 just north of MacCarthur Tunnel flooded, 1 foot of water in lanes 2-3.

Flood in SONOMA, CALIFORNIA
From 07-DEC-19 12:46:00 to 07-DEC-19 13:16:00 (PST-8)
Location: WILFRED
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Widespread flooding in the area on Labath Ave near the Rohnert Park Expressway W, one foot of water across northbound lane.

Flood in ALAMEDA, CALIFORNIA
From 07-DEC-19 14:15:00 to 07-DEC-19 14:45:00 (PST-8)
Location: PIEDMONT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flooding on 580 eastbound near Harrison St off ramp.

Flood in ALAMEDA, CALIFORNIA
From 07-DEC-19 14:18:00 to 07-DEC-19 14:48:00 (PST-8)
Location: EMERYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Widespread flooding across Oakland. CHP reports flooding across portions of several interstates including 580, 880, 980, and 80. Flooding ranges from 6 inches to 2-3 feet deep.

Flood in CONTRA COSTA, CALIFORNIA
From 07-DEC-19 14:28:00 to 07-DEC-19 14:38:00 (PST-8)
Location: PACHECO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

CHP reports several freeways including 680 and 24 have flooding in some or all lanes.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 14:59:00 to 07-DEC-19 15:29:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Street flooding at intersection of Market St and Church St in San Francisco. Estimated 1 to 2 feet of water on roadway with widespread street flooding.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 15:29:00 to 07-DEC-19 15:59:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flooding on 15th Ave and Wawona St in San Francisco. Widespread street flooding with 1-2 feet deep water estimated.

Strong Wind in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 13:23:00 to 07-DEC-19 13:33:00 (PST-8)
Magnitude: 40.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

San Francisco Fire Department reporting two pedestrians injured at the intersection of Locus and Clay with a downed tree, likely brought down in the wind. Victims taken to a trauma center. Report from SFFD PIO twitter.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 15:30:00 to 07-DEC-19 16:00:00 (PST-8)
Location: CRISSY AAF
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report on twitter of roadway flooding on Fillmore and Broadway in San Francisco, estimated depth around 6 inches.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 15:32:00 to 07-DEC-19 16:02:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flooding at intersection of Judah and 30th in Outer Sunset. Estimated 6 inches to 1 foot of water flowing down roadway. Flooding appears widespread.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 15:39:00 to 07-DEC-19 16:09:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two vehicles stuck in flood waters. Hwy 101 northbound connector to Central Freeway is closed due to widespread flooding, 1 to 1 1/2 feet of water in roadway.

Strong Wind in NORTH BAY MOUNTAINS, CALIFORNIA
From 07-DEC-19 14:27:00 to 07-DEC-19 14:32:00 (PST-8)
Magnitude: 40.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Downed power line hanging over roadway at Austin Creek Rd near Chimney Rock Rd.

Strong Wind in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 17:39:00 to 07-DEC-19 18:00:00 (PST-8)
Magnitude: 40.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

SFFD has been responding to downed trees and power lines. Over 20 power outages spread across San Francisco. Largest outage in Lower Haight. Also reporting localized flooding in multiple locations throughout the city.

Strong Wind in SAN FRANCISCO BAY SHORELINE, CALIFORNIA
From 07-DEC-19 22:30:00 to 07-DEC-19 22:40:00 (PST-8)
Magnitude: 40.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Both directions of San Carlos Ave at Cordilleras Ave in San Carlos closed due to large fallen tree across roadway.

Strong Wind in EAST BAY HILLS AND THE DIABLO RANGE, CALIFORNIA
From 06-DEC-19 23:18:00 to 07-DEC-19 01:18:00 (PST-8)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Calaveras Road RAWS station reported gusts between 45 and 48 mph.

Strong Wind in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 06-DEC-19 23:32:00 to 07-DEC-19 18:32:00 (PST-8)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Los Gatos RAWS station recorded gusts between 45 and 66 mph.

Strong Wind in SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST, CALIFORNIA
From 06-DEC-19 13:00:00 to 07-DEC-19 05:00:00 (PST-8)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (PG&E) on Old Coast Tower measured gusts between 45 and 55 mph with a peak gust of 61 mph.

Strong Wind in NORTHERN SALINAS VALLEY / HOLLISTER VALLEY / CARMEL VALLEY, CALIFORNIA
From 06-DEC-19 14:10:00 to 06-DEC-19 21:10:00 (PST-8)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (PG&E) recorded gusts over 45 mph with a peak gust of 56 mph.

Strong Wind in SOUTHERN MONTEREY BAY AND BIG SUR COAST, CALIFORNIA
From 06-DEC-19 18:00:00 to 07-DEC-19 02:10:00 (PST-8)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (PG&E) measured gusts over 45 mph with a peak gust of 54 mph.

Flood in ALAMEDA, CALIFORNIA
From 07-DEC-19 15:40:00 to 07-DEC-19 16:10:00 (PST-8)
Location: EMERYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

I-80 Asby off ramp and on ramp are closed due to flooding, vehicles stalled in 1 1/2 to 2 feet of water.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 16:00:00 to 07-DEC-19 16:30:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

One foot water in basement of home in the Castro District, time estimated as owner was not home during flood. Exact location estimated on map.

Flood in SAN MATEO, CALIFORNIA
From 07-DEC-19 16:15:00 to 07-DEC-19 16:45:00 (PST-8)
Location: STERLING PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flooding in left lanes of I-280 N just before John Daly exit, estimated 1 foot of water.

Strong Wind in NORTH BAY MOUNTAINS, CALIFORNIA
From 06-DEC-19 17:56:00 to 06-DEC-19 18:56:00 (PST-8)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Hawkeye station.

Strong Wind in SAN FRANCISCO PENINSULA COAST, CALIFORNIA
From 06-DEC-19 22:18:00 to 07-DEC-19 04:18:00 (PST-8)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Spring Valley RAWS recorded wind gusts between 45 and 49 mph.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 16:20:00 to 07-DEC-19 16:50:00 (PST-8)
Location: CRISSY AAF
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report on twitter of roadway flooding at Turk and Masonic Ave in San Francisco, estimated 6 inches of water.

Flood in ALAMEDA, CALIFORNIA
From 07-DEC-19 16:50:00 to 07-DEC-19 17:20:00 (PST-8)
Location: CASTRO VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Roadway flooding reported in lane 4 of 580 eastbound.

Strong Wind in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 07-DEC-19 16:20:00 to 07-DEC-19 17:15:00 (PST-8)
Magnitude: 40.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Fallen trees have closed multiple roads in the Santa Cruz Mountains. Hwy 9 was closed after a vehicle crash involving a fallen tree and power lines between Ben Lomond and Brookdale. One driver was trapped inside a vehicle. SR 236 and Acorn Drive was also closed due to downed trees and power lines. More than 1,000 customers were without power https://www.ksbw.com/article/1000-without-power-highway-9-shutdown-after-tree-falls-on-power-lines-vehicle/30158848.

Strong Wind in COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE, CALIFORNIA
From 06-DEC-19 18:31:00 to 06-DEC-19 18:46:00 (PST-8)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Sea Ranch mesonet station.

Flood in SAN FRANCISCO, CALIFORNIA
From 07-DEC-19 17:10:00 to 07-DEC-19 17:40:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Water running down the stairs into the Van Ness Municipal Station near Market St and Van Ness Ave, No SF municipal service between West Portal Station and Embarcadero Station due to flooding.

Debris Flow in SONOMA, CALIFORNIA
From 06-DEC-19 16:28:00 to 06-DEC-19 16:58:00 (PST-8)
Location: STEWARTS PT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rock/mud slide blocking nb and sb lanes of SR-1 at Moonraker Rd.