One of the first events of the winter , the cold wave Motion was caused Causation by the northward movement of an extremely powerful bomb Attack cyclone associated Collaboration with Typhoon Nuri 's remnant , which shifted Change the jet stream far northward , creating Creating an omega block Hiding_objects pattern .

although the omega block broke down Destroying on november 20 , due Causation to a powerful storm Catastrophe moving Motion into the gulf of alaska , frigid conditions continued to persist across much of the united states .