Dave caught this image, looking down the lake, this evening.
You're looking at a sundog... (not to be confused with a sun god) It indicates that there is moisture in the air, and a change in the weather is approaching.
The setting sun was bracketed at one moment by two almost vertical colour spectrums. We'd call them rainbows, but they don't bow, nor do they follow an outburst of rain, so it seems inappropriate.
In any event, it certainly painted a striking sky!