A flood warning has been issued for southeastern Sonoma County through 8:15 a.m. Thursday morning, according to the National Weather Service.
Despite rain subsiding Wednesday night and early Thursday morning, the Russian, Petaluma and Napa rivers are not receding, and automated rain gauges are indicating flooding on area streams and creeks, meteorologist Spencer Tangen said.
Weather officials said water levels are forecast to remain elevated for the next several hours before they begin to recede later Thursday morning.
Tangen said the Santa Rosa, Petaluma, Rohnert Park, Sebastopol, Cotati, Forestville and Graton areas might see flooding.
Meteorologists advise motorists to slow down, as it is harder to see floodwaters at night and to turn around if anyone encounters them.