[AlienCrossfirePlayer]

I'm confused. Would not the prevailing westerlies place the Sahara downwind from Florida?

[cll]

Upwind. It's easterly trade winds at these latitudes.

[MikefromOhio]

It is following the flow along the ITCZ or the Intra Tropical Convergence Zone.

This is a zone that storms can down from East to West along the upper level and lower level flow which prevails in the area.

If it gains any more latitude, the prevailing westerlies will take it back out over the Atlantic, but this time of year the westerly winds are fairly weak or non existent.

[ConorMacNessa]

Florida is not in the prevailing westerlies - at least not South Florida. It's in the N.E. Trade Winds and is downwind from Sahara dust. We had them periodically when I lived in Miami.