January 4, 2021 8:28 am Explainer: The Genesis of Winter Swells in San Diego Every avid San Diego surfer will tell you winter is prime time to hit the water. But what makes the winter swells so epic? NBC 7 meteorologist Crystal Egger explains. US & World Videos 2:44 San Diego military families navigating next steps after deadly jet crash 2:31 South Bay teen gets ready to graduate from high school and Southwestern College 3:34 San Diegans are ready for a busy Memorial Day weekend 1:56 San Diego schools used as plane crash evacuation centers reopen 0:11 New Ring video shows fireball from impact of Murphy Canyon plane crash