Typhoon activity in the West Pacific will induce an impressive November Pacific Jet Extension next week. This will have widespread impacts on North America's downstream weather. Late next is likely to be very active for the Pacific Northwest and broader Western US, including California. Multiple strong low-pressure systems are likely to come onshore. This would be a good start to the water year there. Pac jet extension's often influence broad interior North American warmth and that's the likely outcome through Mid-November for the Central US and Canadian Priaries.