Hawaii is known for frequent rainbows, but here in Haiku we get an unusual number of both double and supernumerary rainbows. The phenomenon of a supernumerary bow only occurs when similarly sized raindrops are consistently spaced, which creates a rainbow with a series of smaller rainbows below. With a double rainbow, the two bows are spaced apart with a band of slightly darker sky between, known as the Alexander’s band. But with a supernumerary rainbow, the bows are connected.
