Radar images made on July 10, 2001 from GOES weather satellites appeared to show a large, perfectly circular cloud formation over different areas. This caused rumors that government weather modification programs were in operation, and that HAARP or ELF-based technology was the cause of the problem.

However, the images were due to a glitch in the Unisys Corporation’s satellite image interpretation system. Subseqently, such images have not reappeared, and the raw data from the National Oceanic and Atmospheric Administration’s GOES satellites never showed the bizarre cloud formations at all.
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