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

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

The California Department of Transportation ... Both storms are of the “Pineapple Express” variety, so named because they carry tropical moisture from the ocean near Hawaii to the mainland.

adding that this latest storm system is an atmospheric river variety known as a “pineapple express” that is characterized by moisture buildup originating in the tropics. With its in-house ...

An atmospheric phenomenon called a Pineapple Express is expected to bring heavy rains and snowfall to California and the Northwest this week. What is a Pineapple Express? It's a type of ...

This story was updated to correct spelling in headline. An atmospheric phenomenon called a Pineapple Express is expected to bring heavy rains and snowfall to California and the Northwest this week.