Thanks for the linky here (from the q&R thread).
Not derecho related, but in March of 2011 we had an F1 go by. Unheard of in my area of SW PA. Roof was tarped for weeks (had to be replaced along w/siding, etc.). Learned a healthy respect for weather that it does happen here. When storms are forecast I pay attention and visit the TORCON page.
If nothin else, my gnome will be safe!