Urban Design
There was something on the news last night (can't remember where now, to search for a link) about urban design or landscape design - not necessarily actual design but the interaction of open fields and trees or large objects which can cause a tornado to "drop" to the ground. They postulated that this could have urban design implications to prevent tornado's - though that seems far off, as yet.
In Chicago we were always taught we couldn't get them because of proximity to the lake, which isn't true (witness waterspouts in Lake Michigan).
I'd take that article with a grain of salt - the Lake Michigan temps are already the same as they were last year despite our cold winter and ice cover. However a cooler summer would be nice and I don't mind thunderstorms...
However, the storms in the south last weekend were predicted based on previous weather patterns, so at least the prediction is increasing.