As the U.S. East Coast is still reeling from impacts associated with Hurricane Matthew, the Pacific Northwest is just now confronting its own potential extreme climate event. For a 4,000 mile long river of moisture streaming off ex super typhoon Songda in the Pacific Ocean is now firing a barrage of storms at Northern California, Oregon, Washington, and British Columbia. A series of storms that could, over the next five days, dump as much as two feet of rainfall over parts of this region.

Powerful Atmospheric River May Produce 2 Feet or More of Rainfall This Week

(A powerful atmospheric river is forming over the record hot Pacific Ocean in a record hot atmosphere. Typhoon Songda is delivering a great deal of tropical moisture to this flow — which is expected to impact the Pacific Northwest and produce very heavy rainfall this week. Image source: Weatherbug.)

Jet stream…