I already have that functionality in the app I wrote.
These are the tracks of tropical cyclones that made it to hurricane status for 2011-2015.
I could filter and draw the tracks only when at hurricane strength, which would cut out all the tropical storms and thin the number of plotted tracks out a bit.
The problem with all tropical cyclones is that the data files are only updated at the end of the season - in fact next March. Otherwise I think I would follow them more closely during the season.
Why they [NHC] don't generate the latest track and then add the best guess forecast track to that on a six hourly basis beats me. I suppose they leave that to the NWP forecast MSLP frames.
