The National Weather Service in San Diego reported very heavy rain and flooding already occurring in the San Bernardino County Mountains on December 24, 2025, afternoon, with more rain and wind expected across the area today, according to an X post shared between 4:16 p.m. and 4:45 p.m. UTC. Fox Weather stated that a dangerous holiday storm is slamming Southern California with life-threatening flooding threats sweeping across Los Angeles, with meteorologist Brandy Campbell live in L.A., per an X post during the same 29-minute reporting window. These updates follow Flash Flood Warnings issued earlier by the National Weather Service in Los Angeles for areas including Glendale, Pasadena, and others until 12:00 p.m. PST, as heavy rainfall from an intensifying atmospheric river continues to impact the region, according to previous NWS X posts.
