The zone only has about 400 residents. The alerts will go out from 10:45 a.m. to 11:30 a.m. on Thursday. It is not an evacuation exercise, just a test of the alert warning system, Sonoma County said.

The Sonoma County Board of Supervisors on Tuesday authorized the Department of Public Infrastructure to move ahead with an ...

A former Petaluma teacher pleaded no contest Friday to making threats that triggered the evacuation of Penngrove ... entered his plea in Sonoma County Superior Court to two counts of making ...