kozuh -- if you think the (mild) topo down there is some sort of shield, you're mistaken -- ever heard of the Jarrell F5 ( http://www.google.com/search?q=jarrell+tx+tornado ) (some of the debris from which fell around Austin)? -- and as for your alleged heft -- the Red Rock I saw ([items linked in] http://investorshub.advfn.com/boards/read_msg.aspx?message_id=62428465 ) deposited some fully-grown head of cattle as far as 20 miles from where they began -- some of them in pieces -- where it crossed I35 just north of my vantage point as it went by, it slammed a large horse it had picked up maybe half a mile west of the highway into one of those heavy steel guardrails, the kind that can deflect a semi, so hard the horse (very dead, legs badly broken, minus its tail and ears and with its mouth and nostrils packed full of mud) bent the guardrail several feet
Greensburg, KS - 5/4/07
"Eternal vigilance is the price of Liberty." from John Philpot Curran, Speech upon the Right of Election, 1790