Very interesting data on those charts...as expected, accuracy of 96-120 hour forecasts has fluctuated around the same range as that of 72 hour forecasts from 10 years ago. That's a nice testament to the improved modeling systems that have come up in the last decade.

Though, and I say this with tongue firmly planted in cheek, I noted that NHC did NOT have a good year last year with their long term forecasts (IE, 72, 96, and 120), which makes sense when you recall the "confusion" of forecasting Chartey, Ivan, and Jeanne last year.

Still, so long as you keep in mind the obvious errors, it's comforting to see how far the NHC has come in the last 10 years. We can only hope the accuracy continues to linearly (exponentially?) improve as time goes on, though we're bound to hit a wall soon in terms of what can be done with current computing power...