A flash flood warning was downgraded Thursday morning to a flood warning for Santa Clara, San Mateo and Santa Cruz counties, according to the National Weather Service. The flood warning also included Alameda and Sonoma counties.
The flash flood warning expired at 9:15 a.m., the NWS said. The flood warning is in effect until 3 p.m.
At about 5:20 a.m., Doppler radar indicated heavy rain in Ben Lomond -- about 1 to 3 inches of rain had fallen in the area, with additional rainfall amounts of up to 3 inches possible. Evacuations were ordered in parts of Santa Cruz County, including Felton and parts of Watsonville, the sheriff's office said.
A flood warning typically means flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring, the weather service said.
Some locations that will experience flash flooding include Palo Alto, Santa Cruz, Cupertino, Saratoga, Los Gatos, Scotts Valley, Los Altos Hills, Woodside, Boulder Creek, Ben Lomond, Felton, Portola Valley, Monte Sereno and Lexington Hills.
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