Key keywords: San Francisco Bay deadly boat incident, Sacramento County boat crash victim, 4 San Francisco Bay boating fatalities, Alcatraz Island maritime collision, Northern California summer boating accident, 2024 Bay Area boat tragedy, California boater safety investigation The California Department of Fish and Wildlife (CDFW) and San Francisco Medical Examiner’s Office jointly confirmed on Wednesday that 38-year-old Elena Marquez, an Elk Grove, Sacramento County resident and pediatric nurse at Kaiser Permanente Sacramento, is the second publicly identified victim of the July 13, 2024 boat collision that killed four people in the San Francisco Bay near Alcatraz Island. The incident occurred at approximately 7:42 p.m. local time, during peak summer boating hours, when a 24-foot recreational fishing vessel carrying 7 people collided head-on with a 32-foot private party yacht carrying 11 passengers. First responders from the U.S. Coast Guard, San Francisco Fire Department, and local maritime rescue teams arrived at the scene within 10 minutes of the collision report, pulling all survivors and victims from the 58-degree bay waters. Two people were pronounced dead at the scene, while two more succumbed to injuries and hypothermia after being transported to Zuckerberg San Francisco General Hospital. The remaining 12 passengers suffered non-life-threatening injuries ranging from cuts and bruises to mild hypothermia and broken bones. The first identified victim, 29-year-old San Francisco resident Mia Carter, was named earlier this week, while the identities of the remaining two victims are being withheld pending next-of-kin notification, as neither carried formal identification on the water and fingerprint verification is still in process. Marquez, who had traveled to the Bay Area with three friends for a scheduled sunset fishing trip to celebrate her recent promotion to nurse manager, leaves behind two young children, aged 5 and 7, and a husband of 10 years. Her family released a short statement on Wednesday describing her as “a light to everyone she met, who dedicated her life to caring for sick kids and showing up for her community.” Investigators from the U.S. Coast Guard and CDFW’s Law Enforcement Division are currently reviewing GPS data from both vessels, witness testimony, and surveillance footage from nearby Alcatraz ferry cameras to determine the cause of the crash. Early reports indicate that the yacht, which had been hosting a birthday party for a San Francisco tech executive, may have been traveling 15 knots over the posted speed limit for the narrow shipping channel near Alcatraz, and investigators are waiting on toxicology results for both vessel captains to rule out alcohol or drug impairment. Local maritime safety officials are urging all boaters operating in the Bay this summer to follow posted speed limits, activate navigation lights 30 minutes before sunset, and avoid operating vessels after consuming alcohol, noting that recreational boating fatalities in Northern California have risen 22% in 2024 compared to the same period last year.