Continued indications of enhanced vertical wave propagation from the NW Pacific as trough settles in during early Week #2. This will help to generate a strong wave 1 disturbance in the stratosphere, with the GEFS ensemble-mean hinting at a major SSW. Still watching. pic.twitter.com/dIpQKr7o76

— Jason Furtado (@wxjay) November 27, 2017