Three Injured in Single-Vehicle Accident on Old Sonoma Highway in Napa, Mass Casualty Incident Declared

Yesterday, a single-vehicle accident on Old Sonoma Highway in Napa resulted in three individuals being injured. The incident, which occurred near the 4300 block, involved a car that veered off the roadway and into a ditch, prompting responses from CAL FIRE/Napa County Fire, American Medical Response, and the California Highway Patrol, CAL FIRE LNU reported.

Sunday at 6 a.m., CAL FIRE/Napa County Fire, American Medical Response and the California Highway Patrol responded to a single-vehicle accident near the 4300 block of Old Sonoma Highway in Napa after a car left the roadway and went into a ditch.According to officials on scene,… pic.twitter.com/Mm5zBypXj2

— CAL FIRE LNU (@CALFIRELNU) November 23, 2025

The crash took place at approximately 6 AM, and the three injured parties were expediently transported to a local hospital via ground ambulance. In response to the severity of the situation, a Level 1 Mass Casualty Incident was declared, a move designed to ensure that adequate medical resources were deployed and that coordination was maintained during the emergency…

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