NOAA's National Weather Service director Louis Uccellini explains:
"The GFS is the foundation for all of our weather and climate models, so today's upgrade will add skill across all NOAA's forecast mission areas, including hurricanes and other high-impact weather. Current investments in more powerful supercomputers, advanced modeling capabilities, and better earth observing systems are creating more precision in the forecast process and strengthening America's resiliency to extreme weather, water and climate events."
The upgraded GFS will be able to use images of weather patterns and storms that will be taken every 30 seconds by a satellite called GOES-R when it launches later this year. It can also predict rainfall in continental US and the intensity of tropical storms better than before. Hopefully, the upgrade makes a big enough bump in overall accuracy, so we can trust the weatherman more.