Accident
High Severity
Active
CHP : Severe traffic alert and Traffic Collision with Injuries and Overturned tractor trailer on CA-12 Eastbound between Ramal Rd (Unincorporated) and Napa Rd (Sonoma). All lanes blocked. Avoid the area.
A high-severity accident was reported on CA-12 E near Sonoma on August 3, 2026 at 12:24 PM.
Last Updated
8 minutes ago
Aug 3, 6:45 AM
Coordinates
38.2527, -122.3958
Update History
5 observations
CHP : Severe traffic alert and Traffic Collision with Injuries and Overturned tractor trailer on CA-12 Eastbound between Ramal Rd (Unincorporated) and Napa Rd (Sonoma). All lanes blocked. Avoid the area.
Aug 3, 6:30 AM
CHP : Severe traffic alert and Traffic Collision with Injuries and Overturned tractor trailer on CA-12 Eastbound west of Napa Rd (Sonoma). All lanes blocked. Avoid the area.
Aug 3, 6:15 AM
CHP : Severe traffic alert and Traffic Collision with Injuries and Overturned tractor trailer on CA-12 Eastbound between Ramal Rd (Unincorporated) and Napa Rd (Sonoma). All lanes blocked. Avoid the area.
Aug 3, 6:00 AM
CHP : Severe traffic alert and Traffic Collision with Injuries and Overturned tractor trailer on CA-12 Eastbound west of Napa Rd (Sonoma). All lanes blocked. Expect delays.
Aug 3, 5:45 AM
CHP : Traffic Collision and Overturned tractor trailer on CA-12 Eastbound west of Napa Rd (Sonoma). Lane blocked. Expect delays.
Aug 3, 5:30 AM
Source: 511_sfbay · ID 511.org/1530118
First seen Aug 3, 2026 5:30 AM