A giant dust storm in Phoenix, Arizona. Haboob - an indian word for dust storm. This storm was epic in proportion: 70 miles long and 1 mile high. Most Arizona natives said this was the dirtiest dust storm (wind carrying the most dirt) they have ever seen. No Al Gore, this is not due to global warming. Here is a video on youtube recorded by Pete Kolb http://www.youtube.com/user/etep31?ob=5#p/u/0/PjK7WF2sN8c