- #1
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I've no idea what the cause is but it fell over a wide area.
http://www.kboi2.com/news/local/Mysterious-dirty-rain-falling-in-Eastern-Washington-Oregon-291094521.html
http://www.kxly.com/news/spokane-news/31142818
http://www.kboi2.com/news/local/Mysterious-dirty-rain-falling-in-Eastern-Washington-Oregon-291094521.html
http://www.kxly.com/news/spokane-news/31142818