Global Forecast System. The operational numerical weather forecasting model run by NCEP. The GFS superceded the AVN and MRF models, on which it is largely based. Forecast data from the GFS is available out to 180 hours at full resolution and 16 days at a reduced resolution.
13:21 EDT There is nothing like watching the yachts enter the River Derwent at the end of the spectacular race and Sunday will be a splendid day to do so.