Satellite image of the November 2014 Bering Sea bomb cyclone early on November 8, before reaching peak intensity. The historic bomb cyclone developed from the remnants of Typhoon Nuri, and became the most powerful extratropical cyclone in the North Pacific Ocean on record. The system's northward movement shifted the jet stream southward over North America, which triggered a cold wave that affected most of North America, with the exceptions of Alaska and Southern California.