The first in a series of significant storms brought strong winds and heavy rain to the San Francisco and Monterey Bay areas. This storm developed over the Pacific Ocean with a strong parent low pressure based in the Gulf of Alaska. Over 51,000 customers lost power across the San Francisco Bay area with nearly 3,500 customers without power in the Monterey Bay area. Numerous power lines and trees were knocked down when strong wind combined with saturated soil.

High Wind in SOUTHERN MONTEREY BAY AND BIG SUR COAST, CALIFORNIA
From 18-JAN-10 09:00:00 to 18-JAN-10 15:00:00 (PST-8)
Magnitude: 54.00 EG
Property damage: 45.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds combined with heavy rain caused trees and power lines to fall across the coastal sections of Monterey County. In Carmel, a large tree limb broke free and damaged a car; on Rio Vista Drive near the mouth of Carmel Valley, a Monterey pine tree was knocked over causing the closure of the road; and another vehicle was damaged due to tree debris on Santa Lucia Avenue. In Pebble Beach a power pole was knocked down on Padre Lane blocking the roadway. Other weather related power problems occurred causing nearly 1,500 customers to lose electricity in Monterey County. A mesonet site at Point Sur Light Station reported an estimated gust to 62 mph at 10:00 a.m. PST. The Monterey Peninsula Airport reported a wind gust to 52 mph at 10:41 a.m. PST.

Strong Wind in SAN FRANCISCO BAY SHORELINE, CALIFORNIA
From 18-JAN-10 09:00:00 to 18-JAN-10 12:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 95.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds knocked over power poles along San Mateo County's bay shore line. Downed power lines were reported in San Mateo, on Cottage Grove Avenue; in Redwood City; and in Burlingame. Also, in Menlo Park, a man was hospitalized after a tree limb hit his car, causing him to crash. About 12,000 customers in San Mateo County were without power.

Strong Wind in NORTHERN MONTEREY BAY, CALIFORNIA
From 18-JAN-10 09:00:00 to 18-JAN-10 14:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 95.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rain combined with strong winds brought several large trees down across Santa Cruz County. In Watsonville, a eucalyptus tree was forced down bringing power lines down with it and damaging several utility poles in the process. A section of the tree blocked both lanes of Murphy Road between San Juan Road and Riverside Drive. In Santa Cruz, a pair of trees was toppled on First Street blocking lanes of traffic; and on Plateau Avenue a tree was blown down onto a car causing minor damage. About 2,000 customers were without power in Santa Cruz County.

Flood in SANTA CLARA, CALIFORNIA
From 18-JAN-10 11:15:00 to 18-JAN-10 12:30:00 (PST-8)
Location: BURBANK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy Rain led to flooding along the southbound lanes of Interstate Highway 880 just north of Stevens Creek Boulevard. The middle and slow lanes were flooded with water at a depth of one foot.

Strong Wind in NORTH BAY MOUNTAINS, CALIFORNIA
From 18-JAN-10 16:30:00 to 18-JAN-10 17:30:00 (PST-8)
Magnitude: 43.00 EG
Property damage: 90.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong wind uprooted a large oak tree forcing it onto Bennett Valley Road near Enterprise Road in the hills east of Petaluma partially blocking one lane of traffic.  The roots had grown under the roadway and when they were torn out of the ground they took about 7 inches of asphalt with them leading to the closure of the eastbound lane. Also in the hills east of Petaluma, another tree was reported to be uprooted on Sonoma Mountain Road at Pressley Road. Power outages across central Sonoma County numbered 3,584 customers.

Flood in SANTA CLARA, CALIFORNIA
From 18-JAN-10 11:00:00 to 18-JAN-10 12:30:00 (PST-8)
Location: (SJC)SAN JOSE INTL A
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy Rain led to flooding along the northbound lanes of US Highway 101 at Lafayette Street. The third and fourth lanes were closed causing traffic delays.

Flood in SANTA CLARA, CALIFORNIA
From 18-JAN-10 10:00:00 to 18-JAN-10 12:00:00 (PST-8)
Location: CAMPBELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain led to flooding in the southbound lanes of State Route 17 in the vicinity of Hamilton Avenue. At least one lane of traffic was closed.

Flood in SANTA CLARA, CALIFORNIA
From 18-JAN-10 08:50:00 to 18-JAN-10 12:30:00 (PST-8)
Location: WAYNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy Rain led to flooding along the north and southbound lanes of US Highway 101 in the vicinity of McKee Road. At least one foot of standing water was reported near the railroad crossing requiring closure of the third and fourth southbound lanes. Also, one foot of standing water was reported in the third and fourth northbound lanes just south of McKee Road.

Strong Wind in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 18-JAN-10 09:00:00 to 18-JAN-10 12:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds during the morning knocked down trees and power lines in numerous places in the Santa Cruz Mountains. In Ben Lomond, trees toppled and knocked down power lines on Alba Road; in Felton, power lines were knocked down at the intersection of Felton Empire Road and Graham Hill Road; in Boulder Creek, State Route 236 was closed just west of State Route 9 due to trees in the roadway; and in Bonny Doon, windblown trees knocked down power lines at Empire Grade Road and brought trees down at the intersection of Pine Flat Road and Bonny Doon Road. About 2,000 customers were without power in Santa Cruz County.

High Wind in SAN FRANCISCO PENINSULA COAST, CALIFORNIA
From 18-JAN-10 09:00:00 to 18-JAN-10 11:00:00 (PST-8)
Magnitude: 60.00 MG
Property damage: 230.00K
Crop damage: 0.00K
Reported by: Mesonet

High wind knocked over power poles along San Mateo County's coast causing 12,000 customers to lose power. Downed power lines were reported in Half Moon Bay, at the intersection of Cedar and Acacia Avenues, along the 700 block on Main Street, and at Park Avenue in Moss Beach; and in Pacifica. The wind also caused damage to fixtures on the roof at the Half Moon Bay City Hall, and it dislodged a patio roof behind Sam's Chowder House, damaging solar panels used to power the restaurant. The Half Moon Airport mesonet site reported a wind gust of 69 mph at 10:00 a.m. PST. At least 12,000 customers lost power in San Mateo County.

Strong Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 18-JAN-10 05:00:00 to 18-JAN-10 08:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds knocked down an oak tree in Healdsburg along Fitch Mountain Road. Power outages across central Sonoma County, including Santa Rosa, numbered 3,584 customers.

Strong Wind in COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE, CALIFORNIA
From 18-JAN-10 05:00:00 to 18-JAN-10 08:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds knocked down trees on Bean Avenue at State Route One near Salmon Creek and on Bodega Highway near State Route One.

Thunderstorm Wind in SAN MATEO, CALIFORNIA
From 18-JAN-10 10:23:00 to 18-JAN-10 10:23:00 (PST-8)
Location: (SFO)SFO INTL ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Squall line thunderstorms moved across the San Francisco International Airport producing wind gusts to 59 mph.

Thunderstorm Wind in SANTA CLARA, CALIFORNIA
From 18-JAN-10 11:03:00 to 18-JAN-10 11:03:00 (PST-8)
Location: MILPITAS
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A microburst interrupted a passenger airliner's approach into San Francisco International Airport. After the 140 passenger jet encountered the microburst it diverted to and landed safely at the San Jose International Airport.