Location west wall of Gulf stream

[wattaway2]

Have had to take it easy for a lil bit to recover from a lil heart work So I was checking the location on the west wall of the Gulf Stream yesterday and today 31 miles off Ft. Lauderdale! I’ve noted it as close as 3 and normally 12 to 18mi. or slightly more but 31 surprised me.Leading to wonder what is the driving force that causes it to fluctuate so much ? Wind direction seam not to fit as our wind is light just know. Temperature has been towards the cool side but normal , haven’t checked to see if the speed might have increased and caused it to shift towards the Bahamas. Can’t seam to get a answer for the shift anyone else have a explanation they can reference?