Avoca NewsLocal news for Avoca, MN continually updated from thousands of sources on the web.Tornadoes in perspective Greg Laden's Blog- May 13, 2008 Category: Climate Posted on: May 12, 2008 10:56 AM, by Greg Laden With all the interest in tornadoes, I thought it would be helpful to provide some contextual data . via ScienceBlogshttp://www.topix.net/city/avoca-mn/2008/05/tornadoes-in-perspective-greg-ladens-blog?fromr... |