I decided to take a look at the 12z NAM (North American Model) for the sake of comparison and posterity.
If you follow the snow threads you'll recall that the NAM gets little respect, in part because it's not global, it's short-range (only out to 84 hours) and has been known to predict massive nor'easters at times, only to have them fizzle into nothing. It did, however, nail our last major winter storm, on which the Euro whiffed spectacularly.
In short, I respect the NAM somewhat, within its range.
Right now, it shows the eye of Irma making it as far southwest as Key West before coming ashore in the western Everglades, rolling up the inside of the left coast just to the east of Naples and Fort Myers - both of which get the western eyewall - and passing through the center of Pinellas County, just east of Tampa.
This is relevant because all of the minor models are now shifting to the west with consecutive runs. There's been a lot of shifting, in all of the models, during the last 3 run cycles and if we're being honest about it we have to wonder if there's a trend here. If we start seeing the 18z and 0z models continue the westward shift then the confidence of all the forecasts in general will have to be adjusted downward.