PredictWind previously provided the Spire SOF-D forecast model through the Forecast Website, PredictWind App and Offshore App.
Spire deprecated the SOF-D model, and as a result, PredictWind removed it from our forecast products in October 2025.
Three additional global forecast models are now available: PWAi, AIFS and ICON.
PWAi (PredictWind AI)
PWAi is PredictWind's proprietary AI-powered global forecast model. It combines information from ECMWF (high resolution), AIFS, Fengwu and GraphCast to generate a single optimized forecast.
PWAi provides 1-hour time steps for the first three days and performs particularly well in validation studies over short- to medium-term forecast periods and larger-scale areas.
AIFS
AIFS is an AI-powered global weather forecasting system developed by the European Centre for Medium-Range Weather Forecasts (ECMWF).
It uses artificial intelligence and machine learning to generate global forecasts and performs particularly well offshore, capturing large-scale weather patterns over the medium to longer term.
ICON
ICON is Germany's global numerical weather prediction (NWP) model, developed by the German Weather Service (DWD) in collaboration with the Max Planck Institute for Meteorology (MPI-M).
ICON uses an icosahedral grid that provides approximately even coverage across the globe. This helps avoid some of the distortion and computational inefficiencies that can occur near the poles with traditional latitude-longitude grids.