“2015, ECMWF’s scientists had squeezed out another day from the future, which meant the six-day forecast was now as good as the two-day forecast in 1975. Then they moved the goalposts: By 2025, ECMWF wants to have a model capable of predicting high-impact events two weeks ahead. (It predicted Sandy eight days ahead.) This is the truly remarkable thing about the place: not merely that ECMWF had the best global weather model in the world but that it had been constantly improved, for forty straight years.”