I keep thinking about uncertainty, and why we don't use models after 10 days (240 hours), and sometimes not even that far out.
This is an example of how forecast skill breaks down in a model over time. These lines loosely represent pressure systems/jet stream patterns high up… pic.twitter.com/qEXkHssPvt

— Craig Setzer, CCM (@CraigSetzer) September 3, 2023