Mystery Radar Blob Reveals Odd Man-Made Phenomenon

On June 4, meteorologists in Huntsville, Ala., noticed a "blob" on their radar screen that looked like a strong thunderstorm, despite sunny skies for miles. After some sleuthing, and several wacky explanations, the scientists have identified the culprit.



via LiveScience.com http://www.livescience.com/40686-mystery-radar-blob-explained.html