We have had several of our monitored Google Webmaster Tools account see a dramatic increase in search queries which began on 8/24/14. We work with some of these websites and some we do not, and we made no changes to warrant this spike. The only pattern that we have seen so far is that these sites are all “local” optimized sites and are on the low end of the site traffic spectrum. We have other sites we watch that showed no movement at all.