Dust is spotty. There but no different than the way it's been.

http://cimss.ssec.wisc.edu/tropic/real-time/wavetrak/winds/m8g10split.html

You can toggle back and forth and see how it changes over 3 hours and amazingly you can see a lot of changes in just 3 hours.

As for the lead wave/invest.. it's spinning but not carrying a lot of convection.

http://www.ssd.noaa.gov/goes/flt/t1/sloop-avn.html

If it weren't for the models jumping on it I would think it will just break up the dust and the dry air and the waves behind it will develop but looks like the NHC has confidence in it's abilities. Keep watching.

Either way these set of waves guarantee that our part of the world is going to have to worry on the tropics a week or so down the line. Might only be worry but they aren't curving out to sea so fast.