Every couple of years I do a plot of 24 and 48 hour forecast verses the actual track. I've found a fairly consistent bias in latitude and longitude. Now my plots could be off (NHC predictions and actual observations are at different times so I had to interpolate), but, assuming I'm not far wrong, you'd think they'd adjust the model accordingly. You know, learn from past performance.
Anyway, with Imelda they claimed, or at least the TV spokesperson did, that it was Humberto that cause it to take a sharp dogleg East. Trouble is Jerry's doing the same thing and there's no other storm out there this time.
A wild guess is that they base the forecast with too much emphasis on past tracks, modified by current conditions. Maybe they need to rely less on former tracks, or they're not looking at the right data, or they just haven't found the right formula to apply the data they have.
Did you know there's a Karen out there? Let the memes begin.