If weather is changing rapidly or you have a shorter transit, the GFS Hourly set of wind, pressure, and precipitation information increases the number of weather looks from one every six hours to one every hour.
Data is made available in 6 hour blocks from 006 through 126 hours with each block consisting of 6 forecasts. You can choose one or more than one of these blocks in your data request.
Model runs are conducted every three hours with new data pulled on the quarter hour starting at 0100 UTC. The spatial resolution of the data is 0.25 degrees.
