User blog comment:CycloneRyne94/Things could get Serious./@comment-10941649-20160820181425/@comment-28470696-20160820182910

Yep. Although we aren't to certain just yet; the GFS keeps flip-flopping all over the place.

In the 12z GFS run, the GFS has the disturbance (90L?) developing faster than 99L, becoming a tropical storm, and then a serious major hurricane (strong C3, weak C4) as it approaches the East Coast, then curving to the north and paralleling the Eastern Season.

The GFS has Hermine developing out of 99L, and instead of the 904 millibar C5 once thought to be Gaston, Hermine fails in the latest run (moderate TS at most). It's expected to enter the Gulf and make landfall in a similar area as Colin.

Watching recent GFS model trends, this will likely all change in the 18z run.