La Niña has reemerged in the eastern Pacific, a climate pattern that typically drives dry winters across the U.S. Southwest.

Researchers at UC Santa Cruz contributed to a new global study published in Science that reveals how severe, long-term ...

California water officials are warning that the state "must be prepared for extreme weather events of all kinds," even as ...

The Los Angeles County Department of Public Health reported the first death from West Nile virus in 2025, in a patient from the San Fernando Valley.

California is seeing a spike in cases valley fever — an illness spread by fungal spores. Researchers speculate the rise is tied to patterns of drought and precipitation.

The first snow since spring is forecast for some across the western U.S., while others can expect a dose of heavy rain and ...

The facility, hailed as a milestone in California’s water sustainability efforts, will meet up to 40% of city’s water needs.