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: Christmas tree recycling, gift card warning, high surf advisory 2:34 In the news: Holiday events guide, rain returns, after school program in East San Jose gives back 1:54 In the news: Santa Cruz Wharf collapse, dangerous high surf warnings, one-on-one with SF's new mayor 2:19 Gift card warning to keep in mind this holiday season 1:21 Watch: New HSBC program helps with the American dream