RELATED: People skip work, school to check out snow on Mount Diablo
Overnight the snow really started coming down at the Summit on Highway 17 in the Santa Cruz Mountains. Just after midnight, the CHP closed 17 in both directions for about 45 minutes at Vine Hill Road. Eventually, they reopened when they said they had enough plows and equipment up to keep the roads clear. The morning commute appeared to go relatively smoothly considering the conditions.
VIDEO: SKY7 takes us on tour of snow around Bay Area
VIDEO: SKY7 takes us on tour of snow around Bay Area
The storm created a gorgeous blanket for Mount Diablo-picturesque snow in an area that doesn't see it very often.
Rangers closed the road leading to the top of the mountain temporarily because of icy conditions early this morning. But just after 9:30 a.m., rangers opened the road and the fun got underway. Some tried to sled down hills on cardboard boxes while others engaged in all-out snowball fights.
VIDEO: SKY7 takes us on tour of snow around Bay Area
In Napa County, about two to three inches of snow stuck to Highway 29 just north of Calistoga in Napa County overnight.
In the Sierra, Interstate 80 is back open this morning after closing yesterday due to white out conditions. A blizzard blew snow across all lanes, creating dangerous driving conditions. Chain controls are now in effect from the Nevada state line to Colfax.
See more photos, stories and videos on the weather.
Download: ABC7 Accuweather app for iPhone and Android Weather Radar: LiveDoppler7 radar images Weather Alerts: Current Watches and Warnings