AI-driven breakthrough doubles sub-seasonal forecast skill and beats climate averages

For the first time, the method consistently outperforms simple climatology averages, a milestone long thought impossible, and it delivers statistically significant gains in predicting extreme events such as floods and cold spells. The work, jointly conducted by Microsoft Research, MIT and other collaborators, was published in Nature on October 14, 2026.Key developments:PBC can run on standard CPUs, making it affordable for resource‑constrained weather agencies.Accuracy improvements wer…