A persistent trough of low pressure has parked itself along the Pacific Northwest. As it spins counterclockwise it is pumping ...

Skiers may delight in the snow forecast, but the latest in a series of atmospheric rivers threatens to bring flooding and ...

Heavy precipitation is falling mostly in mountain areas. A flood watch in also in effect for the coast of central California, ...

Both reservoirs have been steadily rising since November, after the start of California's water year in October. A series of ...

You may have heard meteorologists using the phrases "atmospheric river" and "Pineapple Express" when talking about wet weather in California, but what do they really mean?

An “impressive” atmospheric river is set to deliver numerous rounds of moderate to heavy rainfall across the Bay Area this ...

Ozone pollution, typically associated with warm weather and strong sunlight, has begun to manifest alarmingly in winter. This ...

Wildfire aerosols travel thousands of kilometers to the Arctic, influencing ice cloud formation at warmer temperatures.

What’s the connection between climate change and an increase in so-called atmospheric rivers?

An atmospheric river is essentially a narrow band of Pacific moisture, water vapor, that is funneled into a long narrow flow.

Climate change has amplified the intensity and frequency of atmospheric rivers, because warmer air holds more moisture.

KOIN 6 Meteorologist Josh Cozart explains the rainy and windy weather transition to possible snow as February begins in ...