I happened upon a nice description of how to grab data off of the ESA's Sentinel satellite via
Evan Appelgate and there's a bunch of interesting things in the data. It was taken just this Tuesday morning at 7:11AM. The winds were out of the north at 8MPH and overcast. You can see in the image the effect of the wind creating a rougher, more radar scattering surface on Lake Geneva--dark at the north shore, transitioning to a very slightly rougher surface to the south.
Click to enlarge.
There's a lot more interesting things to look at--that's just the first thing that jumped out at me.