Of those, 1988 had Gilbert, 2001 Michelle, and 2002 Isidore. Can't think of any others off the top of my head. So I guess those are effectively "one storm seasons" if you're looking at only high-impact majors. 2001 though did end up with nine hurricanes including four majors, so there's definitely still life left in the season. Although, if you're looking for a definitive "switch flip" within the next week or so, you'd like to see a more consistent signal from the models. Already appears as though they oversold 91L's potential early on, who's to say the next "modelcane" or two, or three that pop up won't go the same way?