A series of significant winter storms impacted the district during late November and early December 2012. The first storm arrived November 28 and then was followed by three more winter storms. Each brought strong and gusty winds, heavy rainfall, high surf, and flooding to the region. The second storm happened on the 1st and 2nd of the month, with the third and final storm on the 5th of December.

Flood in SONOMA, CALIFORNIA
From 02-DEC-12 07:03:00 to 02-DEC-12 07:03:00 (PST-8)
Location: SCHELLVILLE ARPT
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reports Highway flooding along Highway 37.

Flood in MARIN, CALIFORNIA
From 02-DEC-12 07:25:00 to 02-DEC-12 07:25:00 (PST-8)
Location: BURDELL
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reports roadway flooding on U.S. Highway 101 near San Antonio Road.

Flood in MARIN, CALIFORNIA
From 02-DEC-12 07:32:00 to 02-DEC-12 07:32:00 (PST-8)
Location: CARTE MADERA
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Flooding of several roadways in the area reported by law enforcement.

Flood in SONOMA, CALIFORNIA
From 02-DEC-12 07:41:00 to 02-DEC-12 07:41:00 (PST-8)
Location: PETALUMA
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Mesonet

Minor Flooding on Willow Brook observed.

Flood in SAN FRANCISCO, CALIFORNIA
From 02-DEC-12 07:43:00 to 02-DEC-12 07:43:00 (PST-8)
Location: OCEAN VIEW
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reports flooding on U.S. Highway 101.

Flood in SAN FRANCISCO, CALIFORNIA
From 02-DEC-12 08:16:00 to 02-DEC-12 08:16:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reports street flooding on 8th street.

Flood in CONTRA COSTA, CALIFORNIA
From 02-DEC-12 08:56:00 to 02-DEC-12 08:56:00 (PST-8)
Location: GREENBROOK
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported roadway flooding on Interstate 680 N at Sycamore Valley Road.

Flood in SONOMA, CALIFORNIA
From 02-DEC-12 09:07:00 to 02-DEC-12 09:07:00 (PST-8)
Location: HILTON
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reports flooding leading to road closures at the intersection of Green Valley Road and State Route 116.

Flood in SANTA CRUZ, CALIFORNIA
From 02-DEC-12 11:01:00 to 02-DEC-12 11:01:00 (PST-8)
Location: MISSION SPGS
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Road washed out at Vine Hill Road near Highway 17 due to flooding.

Flood in SAN FRANCISCO, CALIFORNIA
From 02-DEC-12 09:00:00 to 02-DEC-12 09:00:00 (PST-8)
Location: SAN FRANCISCO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

The Church Street Muni station was shut down due to flooding, which resulted in a loss of service on the line from West Portal to the Embarcadero.

Strong Wind in SAN FRANCISCO, CALIFORNIA
From 02-DEC-12 09:00:00 to 02-DEC-12 09:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous trees down across the City of San Francisco. Newspaper reports that public works responded to over 40 downed trees. Blocked roadways at California and Cherry Streets in Laurel Heights were reported. Washington Square, Mount Davidson, and Golden Gate parks reported trees down. Several roads were closed in Golden Gate Park including MLK Drive, 25th Avenue, and 47th Avenue between Fulton Street and JFK Drive. 10 cars were damaged by falling tree branches.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 04:00:00 to 02-DEC-12 08:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

Power lines were blown down across Smith Ranch Road in San Rafael. Two power poles were snapped off on highway 101 in Terra Linda, closing the northbound offramp to Lucas Valley-Smith Ranch Road. Power lines fell at the Park n Ride lot and across Redwood Boulevard. Smith Ranch Road was closed between Redwood and the Freeway and a stretch of Redwood Boulevard was closed south of Paul Drive.

Flood in CONTRA COSTA, CALIFORNIA
From 02-DEC-12 00:00:00 to 02-DEC-12 00:00:00 (PST-8)
Location: ORINDA
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Newspaper

During heavy rainfall, a 24 inch culvert failed and collapsed, opening up a 20 foot sinkhole on Tarabrook Drive. One lane of traffic could still get by the sinkhole. The Orinda City Council declared a state of emergency due to this large sinkhole.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 04:45:00 to 02-DEC-12 04:45:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong winds blew a big rig that was eastbound on the Richmond-San Rafael Bridge onto its side. Eastbound lanes of the bridge were blocked for more than five hours with traffic reduced to using a shoulder to pass. Winds continued to be strong through the morning, and crews could not remove the vehicle due to the wind speeds on the bridge. The truck was removed by crews around 10 AM that morning.

Flood in MARIN, CALIFORNIA
From 02-DEC-12 08:00:00 to 02-DEC-12 08:00:00 (PST-8)
Location: MANOR
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Flooding damaged White Hill Middle School and classes were cancelled on Monday December 3rd due to classrooms being flooded. Significant flooding occurred with the library and several other classrooms covered in mud. Two art classrooms and two seventh grade classrooms, as well as an administrative office and a staff room suffered water damage.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 05:00:00 to 02-DEC-12 05:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

High wind felled several trees in Napa County. A large oak tree branch punctured the roof of a home on Lake Street in Napa County. A 40 foot fir tree on Cedar Street fell due to high winds and took out a water tank, fencing, and part of a roof and back porch.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 05-DEC-12 07:10:00 to 05-DEC-12 07:10:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Sonoma County officials reported that an oak tree fell and blocked Bennett Valley Road near Lafranconi Road at 7:10 A.M. on Wednesday morning. The tree was struck by a car. There were no injuries.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 06:00:00 to 02-DEC-12 06:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A pair of businesses were damaged in Windsor at 239 Windsor River Road. The top of a pine tree was blown off by strong winds, and pierece the roof of the businesses.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 08:20:00 to 02-DEC-12 08:20:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree fell onto the roof of a vacant house in Sebastopol on Robinson Road. The tree fell between the garage and the home next door, taking down a deck and a chimney.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 02:15:00 to 02-DEC-12 02:15:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds cause a power pole to fall at Hall Road and Third Street in Sebastopol. It took down a high voltage line and cut power to a significant portion of western Santa Rosa.

High Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 02-DEC-12 04:00:00 to 02-DEC-12 04:00:00 (PST-8)
Magnitude: 56.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds blew down a massive redwood tree onto a car in Santa Rosa.

Debris Flow in SONOMA, CALIFORNIA
From 05-DEC-12 13:30:00 to 05-DEC-12 13:30:00 (PST-8)
Location: JENNER
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 1 was closed north of Jenner due to a significant mud and rock slide blocking the lanes of the road.

Flood in MARIN, CALIFORNIA
From 02-DEC-12 07:50:00 to 02-DEC-12 07:50:00 (PST-8)
Location: SAN ANSELMO
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rains produced flooding of the Ross Valley Sanitary District sewer system. A massive sewage spill ocurred in San Anselmo where 30,000 gallons of sewage spilled into Sleepy Hollow Creek.

Debris Flow in SANTA CRUZ, CALIFORNIA
From 02-DEC-12 09:00:00 to 02-DEC-12 09:00:00 (PST-8)
Location: MISSION SPGS
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rain triggered a mud and landslide that lead to a washout of Vine Hill Road. The road was completely closed for 4 days for repairs.

Flash Flood in MARIN, CALIFORNIA
From 02-DEC-12 09:00:00 to 02-DEC-12 09:00:00 (PST-8)
Location: SAN ANSELMO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Mesonet

Water level reached 12.59 feet on San Anselmo Creek gauge. Gauge operators indicated that flooding begins above 11.1 feet on that gauge. Flooding was reported on nearby Sleepy Hollow Creek impacting lower floors of residences on Butterfield Road.

Flash Flood in SONOMA, CALIFORNIA
From 02-DEC-12 09:00:00 to 02-DEC-12 09:00:00 (PST-8)
Location: PETALUMA SKY RNCH AR
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

The water level on Willow Brook at Penngrove park reached 61.9 feet. Water on the creek at this location goes out of its banks at 60.7 feet with minor flooding in Penngrove Park in Petaluma.

Flash Flood in MONTEREY, CALIFORNIA
From 02-DEC-12 14:12:00 to 02-DEC-12 14:12:00 (PST-8)
Location: POSTS
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

The water level on the Big Sur River near Big Sur reached 10.42 feet. Flooding begins with levels above 10.0 feet with minor flash flooding in the Big Sur area.

Flood in SONOMA, CALIFORNIA
From 02-DEC-12 06:34:00 to 02-DEC-12 06:34:00 (PST-8)
Location: SANTA ROSA ARPT
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported Roadway Flooding along Carriage Lane.

Flood in MARIN, CALIFORNIA
From 02-DEC-12 06:43:00 to 02-DEC-12 06:43:00 (PST-8)
Location: PT REYES STATION
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reports minor flooding of roadways.

Flash Flood in SONOMA, CALIFORNIA
From 02-DEC-12 10:00:00 to 02-DEC-12 10:00:00 (PST-8)
Location: PETALUMA SKY RNCH AR
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

The water level on Willow Brook at Penngrove park reached 62.1 feet. Water on the creek at this location goes out of its banks at 60.7 feet with minor flooding in Penngrove Park in Petaluma.