Very clear bifurcation point in NWP for the wave coming off Africa over the next couple days, highlighted by the highly divergent 12Z GFS/ECMWF as well as the 12Z EPS. Vastly different solutions depending on how the wave envelope evolves over the next 2-3 days. pic.twitter.com/ICq3LS7zuY

— Andy Hazelton (@AndyHazelton) September 10, 2020