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. During the second storm on November 30, at noon time there were reported 13,800 power outages in the Bay Area.

Flash Flood in MONTEREY, CALIFORNIA
From 30-NOV-12 10:25:00 to 30-NOV-12 11:00:00 (PST-8)
Location: NOTLEYS LNDG
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS spotter reports 3.50 inches of rain since 700 AM PST with a storm total of 4.88 inches. The spotter observed overwhelmed drainage culverts along the road that were backing up with significant erosion being reported.

Flash Flood in MONTEREY, CALIFORNIA
From 30-NOV-12 11:59:00 to 30-NOV-12 12:30:00 (PST-8)
Location: NOTLEYS LNDG
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS spotter reports that rain intensity has increased and the flash flooding is beginning again with overwhelmed drainage culverts and flooding on the roadways with erosion of the banks around culverts observed.

Flood in SANTA CRUZ, CALIFORNIA
From 30-NOV-12 11:00:00 to 30-NOV-12 11:00:00 (PST-8)
Location: SOQUEL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A man drowned in the waters of Soquel Creek in Capitola during a heavy rainstorm that produced minor flooding of the creek. He drowned in a section of the creek in Perry Park at the rear of a grocery store on 809 Bay Avenue in Capitola.

Flash Flood in SONOMA, CALIFORNIA
From 30-NOV-12 15:00:00 to 30-NOV-12 17:00:00 (PST-8)
Location: PENNGROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

City of Petaluma flood monitoring gauges on Willow Brook at Penngrove Park measured stage of 62.4 feet. At 60.7 feet water comes out of the banks. Minor flooding in Petaluma is observed in park land on Willow Brook and Petaluma River.

Heavy Rain in NAPA, CALIFORNIA
From 30-NOV-12 05:18:00 to 30-NOV-12 05:18:00 (PST-8)
Location: RUTHERFORD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Observations at Conn Dam measured heavy rainfall. Minor urban and small stream flooding was observed across Napa County due to the heavy rainfall.

Heavy Rain in SONOMA, CALIFORNIA
From 30-NOV-12 05:46:00 to 30-NOV-12 05:46:00 (PST-8)
Location: SKAGGS SPGS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations measured heavy rainfall. Minor urban and small stream flooding was observed across Sonoma County due to the heavy rainfall.

Heavy Rain in SANTA CLARA, CALIFORNIA
From 30-NOV-12 07:12:00 to 30-NOV-12 07:12:00 (PST-8)
Location: MONTALVO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 2020 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Santa Clara County due to the heavy rainfall.

Heavy Rain in SANTA CRUZ, CALIFORNIA
From 30-NOV-12 07:12:00 to 30-NOV-12 07:12:00 (PST-8)
Location: FOREST PARK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 479 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Santa Cruz County due to the heavy rainfall.

Heavy Rain in MONTEREY, CALIFORNIA
From 30-NOV-12 07:34:00 to 30-NOV-12 07:34:00 (PST-8)
Location: LUCIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 3288 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Monterey County due to the heavy rainfall.

Heavy Rain in NAPA, CALIFORNIA
From 30-NOV-12 08:30:00 to 30-NOV-12 08:30:00 (PST-8)
Location: ANGWIN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 1715 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Napa County due to the heavy rainfall.

Heavy Rain in MONTEREY, CALIFORNIA
From 30-NOV-12 09:31:00 to 30-NOV-12 09:31:00 (PST-8)
Location: LUCIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 3288 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Monterey County due to the heavy rainfall.

Heavy Rain in MONTEREY, CALIFORNIA
From 30-NOV-12 09:31:00 to 30-NOV-12 09:31:00 (PST-8)
Location: LUCIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 3368 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Monterey County due to the heavy rainfall.

Heavy Rain in SANTA CLARA, CALIFORNIA
From 30-NOV-12 09:45:00 to 30-NOV-12 09:45:00 (PST-8)
Location: HOLY CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Observations at 3400 feet elevation measured heavy rainfall. Minor urban and small stream flooding was observed across Santa Clara County due to the heavy rainfall.

Flood in SANTA CRUZ, CALIFORNIA
From 30-NOV-12 12:00:00 to 30-NOV-12 12:00:00 (PST-8)
Location: ELLICOTT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

The general manager of pajaro dunes south said that 6 inches of water was covering beach road near shell drive due to heavy rainfall.

Strong Wind in SAN FRANCISCO, CALIFORNIA
From 30-NOV-12 08:00:00 to 30-NOV-12 08:00:00 (PST-8)
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree was blown down by strong wind gusts in the Pacific Heights neighborhood. Traffic was blocked for hours as a busy intersection was blocked and a car was smashed.

High Wind in EAST BAY HILLS AND THE DIABLO RANGE, CALIFORNIA
From 28-NOV-12 11:28:00 to 28-NOV-12 11:28:00 (PST-8)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 60 MPH was measured at Rose Peak at elevation 3030 feet. Numerous trees down and some power outages occurred due to the wind gusts.

Heavy Rain in NAPA, CALIFORNIA
From 30-NOV-12 09:53:00 to 30-NOV-12 09:53:00 (PST-8)
Location: RUTHERFORD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heavy rainfall measured at Conn Dam. Minor flooding of urban areas and small streams was observed across Napa County during this event.

Heavy Rain in MONTEREY, CALIFORNIA
From 30-NOV-12 12:10:00 to 30-NOV-12 12:10:00 (PST-8)
Location: LUCIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Storm total rainfall of 8.03 inches measured at Mining Ridge RAWS site at 3288 feet elevation. 3.42 inches of this rain fell in the past 3 hours prior to the report. Minor flooding of urban areas and small streams was observed across Monterey County during this event.

Heavy Rain in SANTA CRUZ, CALIFORNIA
From 30-NOV-12 12:11:00 to 30-NOV-12 12:11:00 (PST-8)
Location: FOREST PARK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Heavy rainfall measured at 479 feet elevation. Minor flooding of urban areas and small streams was observed across Santa Cruz County during this event.

Strong Wind in NORTHERN MONTEREY BAY, CALIFORNIA
From 30-NOV-12 09:30:00 to 30-NOV-12 09:30:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

A pair of acacia trees was toppled by wind gusts estimated at 55 MPH. The trees blocked Carbonera drive in the Pasatiempo area. The trees also buried an SUV parked at the curb on the street.

Debris Flow in ALAMEDA, CALIFORNIA
From 30-NOV-12 08:00:00 to 30-NOV-12 08:00:00 (PST-8)
Location: NILES
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

Following heavy rain on November 30, a mudslide shut down portions of Highway 84, Niles Canyon Road, to the east of Fremont. The California Highway Patrol closed the road due to the mudslide.

Strong Wind in COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE, CALIFORNIA
From 28-NOV-12 09:06:00 to 28-NOV-12 09:06:00 (PST-8)
Magnitude: 49.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 56 MPH was measured at Pt. Reyes on the coast. Numerous trees down and some power outages occurred due to the wind gusts.

High Wind in SAN FRANCISCO PENINSULA COAST, CALIFORNIA
From 28-NOV-12 11:18:00 to 28-NOV-12 11:18:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 61 MPH was measured at Spring Valley RAWS at elevation 1075 feet. Numerous trees down and some power outages occurred due to the wind gusts.

High Wind in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 28-NOV-12 12:32:00 to 28-NOV-12 12:32:00 (PST-8)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 75 MPH was measured at Los Gatos RAWS at elevation 1842 feet. Numerous trees down and some power outages occurred due to the wind gusts.

Strong Wind in SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST, CALIFORNIA
From 28-NOV-12 10:50:00 to 28-NOV-12 10:50:00 (PST-8)
Magnitude: 49.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 56 MPH was measured at Highland Peak RAWS at elevation 2490 feet. Numerous trees down and some power outages occurred due to the wind gusts.

High Wind in SOUTHERN MONTEREY BAY AND BIG SUR COAST, CALIFORNIA
From 28-NOV-12 08:49:00 to 28-NOV-12 08:49:00 (PST-8)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 62 MPH was measured at the coast. Numerous trees down and some power outages occurred due to the wind gusts.

High Wind in COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE, CALIFORNIA
From 30-NOV-12 03:16:00 to 30-NOV-12 03:16:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 63 MPH was measured at Mill Valley at elevation 316 feet. Numerous trees down and some power outages occurred due to the wind gusts.

Strong Wind in NORTHERN MONTEREY BAY, CALIFORNIA
From 30-NOV-12 10:00:00 to 30-NOV-12 10:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 1.00K
Reported by: Utility Company

Pacific Gas and Electric had 1300 customers reported without power in Santa Cruz County due to outages caused by wind gusts and fallen trees.

High Wind in SAN FRANCISCO PENINSULA COAST, CALIFORNIA
From 30-NOV-12 04:18:00 to 30-NOV-12 04:18:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 63 MPH was measured at Spring Valley RAWS at elevation 1075 feet. Numerous trees down and some power outages occurred due to the wind gusts.

High Wind in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 30-NOV-12 02:32:00 to 30-NOV-12 02:32:00 (PST-8)
Magnitude: 73.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A wind gust of 84 MPH was measured at Los Gatos RAWS at 1842 feet elevation. Numerous trees down and some power outages occurred due to the wind gusts.

Strong Wind in SAN FRANCISCO BAY SHORELINE, CALIFORNIA
From 28-NOV-12 12:00:00 to 28-NOV-12 12:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Newspaper

High winds brought down a tree on Old La Honda Road in Woodside that closed both lanes of traffic for several hours.

Strong Wind in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 30-NOV-12 12:00:00 to 30-NOV-12 12:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

Downed power lines closed Trout Gulch Road and highland Way, and Highway 9 between Felton and Ben Lomond. Highway 9 was closed all day for Electric Company power line repairs.

Flood in ALAMEDA, CALIFORNIA
From 30-NOV-12 12:00:00 to 30-NOV-12 12:00:00 (PST-8)
Location: PABRICO
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Newspaper

Highway 84 was flooded between Decoto Road and Newark Boulevard and between Mission Boulevard and Main Street.

Strong Wind in SAN FRANCISCO BAY SHORELINE, CALIFORNIA
From 30-NOV-12 10:00:00 to 30-NOV-12 10:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

Alpine Road in San Mateo County was closed until noon due to downed trees and power lines.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 30-NOV-12 01:30:00 to 30-NOV-12 01:30:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds knocked trees down onto power lines which sparked a fire that burned down a small cabin near Fairfax, killing a person inside.

Flood in NAPA, CALIFORNIA
From 30-NOV-12 05:00:00 to 30-NOV-12 06:00:00 (PST-8)
Location: OAK KNOLL
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Newspaper

Hopper Creek flooded residential streets beginning around 5 AM with the water subsiding after the rains ended later Friday morning.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 30-NOV-12 03:00:00 to 30-NOV-12 03:00:00 (PST-8)
Magnitude: 48.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Department of Highways

Caltrans reported southbound highway 29 was closed north of Peterson Drive near Bothe-Napa Valley State Park because of downed trees between 3 A.M. and 9:40 A.M. Friday.

Flash Flood in SONOMA, CALIFORNIA
From 30-NOV-12 13:00:00 to 30-NOV-12 15:00:00 (PST-8)
Location: PETALUMA SKY RNCH AR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

City of Petaluma flood monitoring gauges on Willow Brook at Penngrove Park measured at 62.0 feet. At 60.7 feet, water goes out of the banks.  Minor flooding in Petaluma in park lands along the brook and the Petaluma River.