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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
14:41 EDT New Zealand is preparing for a major weather event this weekend and Tropical Cyclone Luci brings gale for winds and heavy rain to northern and central parts of the country.