It’s lunar rainbow time again in Yosemite: the moon will become full again this Thursday, and with clear skies we’d be able to see, and photograph, lunar rainbows on Upper and Lower Yosemite Falls on Wednesday, Thursday, and Friday evenings. But the unusually wet spring continues, and the forecast calls for rain and higher elevation snow Wednesday and Thursday, and possibly Friday as well. If the skies clear unexpectedly, you can find precise information about where and when to photographer lunar rainbows on Don Olson’s web site, and some tips for photographing lunar rainbows in one of my previous blog posts. I also wrote about some of my experiences photographing lunar rainbows on my 25 Years in Yosemite blog.