They are more of a pain than scary. Fence companies love all the work they have after a big blow levels all the solid wood fences. One big wind bent the town square flagpole over at a 45 degree angle and they replaced it with a massive pole. You get to do plenty of house cleaning after the big wind as we get plenty of dust flying. The winds can come over the Sierra crest at 200mph and some foothill areas can get 100mph gusts.