2 p.m.One of the main links between St. Helena to Santa Rosa was blocked to commuters after a morning fire broke out 3 miles east of the Sonoma-Napa county line.

Spring Mountain Road, which then becomes Saint Helena Road in Sonoma County, remains closed to all but fire trucks and local traffic after the fire broke at 9 a.m. near Tarwater Road, CalFire said.

As of 1:45 p.m., the fire burned 50 acres, threatening houses and outbuildings, CalFire said.

CalFire also responded to two other fires in Sonoma County at 4 a.m. fire off of Geysers Road in Sonoma County.

As of late morning 70 acres were still burning while 50 acres were contained, according to CalFire.

Check back later in the day for more on this story.