im no genius but I think there's a front behind which is colder air to the north and west but that front is moving towards Irma. When it gets closer to that, Irma will want to stay in the nice warm waters and hot/humid conditions so she'll turn right....towards the warm water and more favorable hurricane conditions.
Not even close, actually. It's all about steering currents resulting from various low/high pressure systems in the vicinity of Irma. First, there's the large, very strong WAR (Western Atlantic Ridge, often known as a Bermuda High) anchored in the western Atlantic and featuring clockwise rotation, such that on its SW periphery, near Irma, the steering currents want to send Irma to the W or maybe WNW, which it has been doing for days.
However, the change in steering currents being modeled is due to two players coming from the NW/West, i.e., a significant "trough" (low pressure) approaching the east coast, and an upper level low approaching the SE US - both of these features have counterclockwise rotations to the N/NW of Irma, which will tend to steer Irma to the NNW or North in a day or two, as those features become stronger and as the WAR loses its punch, as Irma keeps moving away from it.
The absolute key to the movement of Irma is the relative strength of each of these systems over the next 2-3 days in reality vs. how they're being modeled now and when that turn from the current WNW path changes to NW then NNW and maybe close to N, as the storm gets to South Florida's longitude. If the turn happens 50 miles sooner than the NHC is predicting, the storm goes up the east coast; if the turn happens as forecast, the storm goes right up the center of the peninsula; if the turn happens 50 miles later than the NHC is predicting, then the storm goes up the Gulf Coast.
And +/- 50 mile errors in the track at the point of the turn is a very small error, vs. the overall track and is very difficult to get exactly correct, which is why the experts have been reluctant to focus too much on one track and have been focusing more on the envelope of potential tracks.
The NHC and Jeff Masters links I've been providing can help explain these factors, but probably the best explanation of the steering factors I've seen is the link I posted yesterday by Levi Cowan, as it's a video showing the players involved very nicely. Worth a watch.
Had the wrong link - try this one at about the 6:30 mark.