Aaron Henkleman snapped this photo Saturday evening, which captures the same
optical phenomenon brought to our attention by Jeff Chochola, who observed a virtually
similar display just a night earlier. Aaron’s photo was taken as he fished on Spin Lake
west of Danvers in downstate Illinois just west of Bloomington! Aaron correctly
speculated in his e-mail to us that the distant tops of cumulonimbus clouds might be
playing a role here. That’s exactly what was going on.
THANKS Aaron for the great photo!
Tom Skilling

Photo courtesy of Aaron Henkleman, Danvers, Illinois
