1989 Loma Prieta earthquake earthquake precursor, more recent studies have cast doubt on the connection, attributing the Corralitos signals to either unrelated magnetic disturbance or, even more simply, to sensor-system malfunction. The earthquake caused severe damage in some very specific locations in the San Francisco Bay Area, most notably on unstable soil in San Francisco and Oakland. Oakland City Hall was evacuated after the earthquake until a US$80M seismic retrofit and hazard abatement work was completed in 1995. Many other communities sustained severe damage throughout the region located in Alameda, San Mateo, Santa Clara, San Benito, Santa Cruz and Monterey counties. Major property damage
Sports in the San Francisco Bay Area both teams played against each other, and Oakland swept the Giants in a 4-game series. However, the series is probably best known for the 1989 Loma Prieta earthquake which struck on the day of Game 3. San Francisco was ranked #1 in 2012 among America's Best Baseball cities. The study examined which U.S. metro areas have produced the most Major Leaguers since 1920. Oakland is home of the Golden State Warriors in the NBA, who currently play at the Oracle Arena. The Warriors originally played in Philadelphia, but relocated to San Francisco in 1962 and then to Oakland in 1971.