Many atmospheric river events are weak. But the powerful ones can transport extraordinary amounts of moisture. Studies have ...

The moisture bringing feet of snow to the Rocky Mountains through Saturday is being driven by a weather pattern called the ...

A Pineapple Express is an atmospheric river that originates near Hawaii. "What stands out about this Pineapple Express is the duration," AccuWeather meteorologist Heather Zehr told USA TODAY.

What is a Pineapple Express? It's a type of atmospheric river ... It originates near Hawaii. Accuweather meteorologists predict this atmospheric phenomenon could bring strong winds, heavy rains ...