Higher pressure is usually associated with sunny weather, lower pressure with stormy weather. The temperature to which the air needs to be cooled for moisture to condense, for example, as dew.

A powerful storm fueled by an atmospheric river is drenching California, triggering evacuation orders and flood warnings.

Parts of Pacific Coast Highway remained closed due to heavy flooding and mudslides in Southern California, according to state ...

Parts of northern and central California saw more than two inches of rain Tuesday as Southern Californians face rain through Friday.

Southern California faces the continued risk of rock and mudslides on wildfire-scarred hillsides Friday, a day after heavy ...

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