* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, San Francisco, San Mateo and northwestern Santa Clara. * WHEN...Until 1000 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 655 AM PST, Doppler radar indicated heavy rain. Minor flooding is already occurring in the advisory area. - Some locations that will experience flooding include... San Jose, San Francisco, Sunnyvale, Santa Clara, Daly City, San Mateo, Redwood City, Mountain View, Palo Alto, South San Francisco, Cupertino, San Bruno, Pacifica, Menlo Park, Foster City, Los Altos, Burlingame, San Carlos, East Palo Alto and Belmont. - http://www.weather.gov/safety/flood