This morning, I walked out on our deck and watched this squall move in.
While I walked the dogs, the squall passed from east to west, "across our bow", as it were, only ever bringing a few small drops to shore. Well to the west, the rain wall and the sun met to form a rainbow.
The longer I watched, the brighter the rainbow became, until it was so bright, it was reflected in the ocean below, giving the strange impression of a rainbow turned on its side.
The whole show was over by about 6:45, and were it not for my recent schedule change, I would have missed it all.