San Mateo County December 5, 2024 6:27 pm A closer look at San Mateo County's emergency alert system after tsunami warning Some residents said they never heard any sirens that are supposed to warn of a possible tsunami. Damian Trujillo reports. US & World Videos 1:57 In the news: Meat heist, Dungeness crab season begins, Golden Globes 3:49 What to know about hydroclimate whiplash 1:57 In the news: High surf advisory, Santa Cruz wharf to reopen Saturday, rescued spider monkey 1:53 In the news: Deadly head-on crash, transportation fares increase, 2025 NFL Pro Bowl 2:58 In the news: Violence in Oakland, new California laws, Santa Cruz man rides potential record wave