That is a cool picture! Looks like a shelf cloud, I'm not a meteorologist, so I can't recognize funnels. http://weathersavvy.com/Q-Shelf_Roll_Clouds1.html
We watched an awesome storm roll in over Lake Michigan that looked just like that, it was awesome...this huge shelf cloud and storm rolling closer and closer, and as it got just overhead the wind went from still to raging...we had to get out of there pretty quick because that sand was blasting us!
We get quite frequent water spouts on the lake, they are similar but not the same as tornadoes... although infrequently we get tornadoes. Something about the warmer water with the cooler air above.