Boston August 21, 2023 11:38 am Tropical storm Hilary pummels Southern California Tropical storm Hilary brought rain, strong winds and mudslides across Southern California, blocking interstates and knocking out 911 services in some areas. US & World Videos 2:45 Weather forecast: Cold and windy 4:16 Forecast: Tracking a cold stretch 3:31 Forecast: The cold continues, but when will we see snow? 2:54 Wintry week ahead in New England 2:43 This week expected to be the coldest so far of the season