The Petaluma River reached flood stages Sunday as a blustery storm continued to fell trees, cut power, close roads and drench the North Coast.
A flash flood warning was extended until 4:30 p.m. Sunday for low-lying areas across the North Bay, including Petaluma and the Sonoma Valley. Emergency crews remained on high alert, as heavy rain was forecast to continue throughout the day and water drains from the hills.
"We're ready, everybody is on standby," Petaluma Fire Battalion Chief Jeff Schach said.
The intense storm walloped the North Coast throughout the morning, cutting power for more than 2,000 customers.
At least an inch of water flooded a house north of Healdsburg on Terra Holland Lane off Alexander Valley Road.
Downed power lines and a tree closed Highway 12 near Watmaugh Road south of Sonoma. Mud slides blocked Highway 128 west of Cloverdale and closed Annapolis Road east of Highway 1.
Flood waters consumed roads across the county.
Among them, Eastside Road between Trenton Healdsburg Road and Windsor River Road and Green Valley Road between Thomas and Sullivan roads were impassible.
Petaluma received 0.87 inches of rain during the 24 hours ending 8 a.m. Sunday. Cloverdale received 1.3 inches and 0.46 inches fell at the Charles M. Schulz Sonoma County Airport.
About another inch will fall by Sunday's end, said meteorologist Diane Henderson with the National Weather Service.