Many web based services (including services such as US Grib, Windfinder, WindGuru, MetView, BuoyWeather, and SeaBreeze) use the freely available GFS model from the USA Met Service (NOAA). Whilst the GFS is a good weather model, and free, it is only run at 50km resolution and therefore does not capture the local topography effects. At PredictWind we run our own proprietary model at 50km/8km/1km resolution capturing the local topography effects to produce a forecast of unparalleled accuracy. Please see the resolution video to gain a better understanding of the impact on resolution on accuracy.