Forecast Models: ECMWF, GFS, ICON, & More | RainViewer Blog

Each weather forecast is powered by numerical weather prediction (NWP) models. These are engines that simulate our atmosphere using physics and live data. But here’s the catch: not all models perform the same, and some shine brighter in specific regions or conditions. In this blog post, we will break down the world’s major forecast models , from global workhorses like ECMWF and GFS to regional pros like COSMO. Knowing their strengths can give you a smarter edge when tracking storms or planning your week.