Weathercatch: From a polar plunge to Pineapple Express

The atmospheric river that swept through Washington state late Sunday night through Monday of this week was packed with more than wind gusts and rain. It was also packed with irony.

The channel of warm, wet weather originated in the tropical Pacific Ocean west of Hawaii – an event that’s often referred to as the “Pineapple Express.” This particular one brought winds, precipitation and unseasonably warm temperatures to our state. Here in the Inland Northwest, it gave rise to temperatures in the mid- to upper 40s.

An atmospheric river is a long channel of moisture carried by the jet stream that typically brings warm winds, rain and snow to

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