US EditionAtmospheric River Slams California, Southern Region Faces High Flood Threat into Christmas
Southern California faces heavy rain up to 10 inches and 3 to 5 feet of snow in Sierra Nevada, raising risks of flash floods and mudslides, officials warn.
- On Monday, Dec. 22, 2025, heavy rain flooded San Francisco streets as the storm system pummelled Northern California and is expected to intensify into Christmas Eve, the National Weather Service said.
- Meteorologists say atmospheric rivers are long, narrow bands transporting tropical moisture, with rainfall amplified by warm air and traced to a tropical cyclone in Indonesia.
- Emergency crews reported water rescues and at least one death after flash flooding began Saturday, while heavy snow and winds made mountain pass travel nearly impossible in the Sierra Nevada.
- State and local officials mobilized first responders across coastal and Southern California counties, the California National Guard is on standby, and authorities urged millions of holiday travelers to stay home or alter plans.
- Earlier this month, stubborn atmospheric rivers drenched Washington state with nearly 5 trillion gallons of rain, while forecasters warned Southern California could see up to 8 inches versus the typical half an inch to 1 inch, raising mudslide risks in areas burned by last January's wildfires.
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199 Articles
NTD Evening News Full Broadcast (Dec. 24)
A powerful storm carrying a strong atmospheric river is laying siege to California. Evacuations have been issued amid the risk of life-threatening flooding and debris flows. According to the Weather Prediction Center, a Level 4 of 4 “high” risk of flooding rain is in place for Southern California on Wednesday, affecting more than 7 million people across parts of Los Angeles and surrounding counties. A tragedy in eastern Pennsylvania: an explosio…
Southern California Slammed by Fearsome Flooding | Science-Environment
Southern California Slammed by Fearsome Flooding Southern California was besieged by intense rains on Wednesday, leading to widespread flash flooding as officials urged the public to avoid travel and heed evacuation orders due to perilous conditions.The atmospheric river storm, streaming moisture from the Pacific, threatened to disrupt holiday travel, with downpours surpassing an inch per hour in some areas.Authorities expanded flash-flood warni…
InsideNoVA.com
Southern California braces for devastating Christmas storm
Flash flood warnings were in effect in Los Angeles and most of southern California on Wednesday as one of the worst Christmas storms in recent memory brought heavy rain and fears of deadly mudslides.
California faces life-threatening flooding, mudslides, and heavy snow through Christmas
Southern California faces a High Risk of flash flooding through Thursday, with heavy rain from a Pacific moisture plume. Downtown Los Angeles could see 4–8 inches of rain, AccuWeather warns.
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