A late afternoon walk down to Teddington Lock today. I was going to post an unusual shot of a heron posing as a garden ornament on a flat balcony. However just as we were heading home I spotted this ‘fire rainbow’. I’ve seen it once before and read about them recently. Technically it is part of a circumhorizontal arc and can only be seen in London between late May and July when the sun is at an elevation of at least 58 degrees and shines through hexagonal ice crystals in high altitude cirrus clouds... boring!
