RALEIGH, N.C. (WNCN) — The most sunshine we’ve seen all week in central North Carolina has combined with some of the departing rain to produce several sightings of rainbows and double rainbows Thursday night.
A rainbow forms when sunlight is reflected off of a raindrop, but in order to get a double rainbow, light is reflected twice though a raindrop in a complicated pattern, says CBS North Carolina Chief Meteorologist Wes Hohenstein. The second rainbow is usually dimmer and the colors of the second rainbow are inverted.
A primary rainbow has the same color order every time; red, orange, yellow, green, blue, indigo, violet. The colors of the second rainbow are inverted; starting with violet on the outside and red moving to the inside.
The second rainbow appears dimmer because not as much light makes it to the second reflection.