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The Puget Sound region from Olympia, Washington to Vancouver, BC received several inches of rain per day in November 2006 from a series of successive Pineapple Express storms that caused massive flooding in all major regional rivers and mudslides which closed the mountain passes.

These storms included heavy winds which are not usually associated with the phenomenon.

Regional dams opened their spillways to 100 % as they had reached full capacity due to rain and snowmelt.

Officials referred to the storm system as " the worst in a decade " on November 8, 2006.

Portions of Oregon were also affected, including over 14 inches ( 350 mm ) in one day at Lees Camp in the Coast Range, while the normally arid and sheltered Interior of British Columbia received heavy coastal-style rains.