[Thread on model forecasting]

As the upcoming -NAO block gets closer, you may see long-range maps of deterministic GFS & ECM runs.

They tell us very little alone - it's only 1 data point. Looking at the last few runs adds more data points, but shows a *lot* of variability. pic.twitter.com/OY5IuhgJCI

— Tomer Burg (@burgwx) November 29, 2022