Wendi Fuller was driving home from work when she noticed a rainbow thicken in the sky.
After pulling into her driveway, she took out her cellphone and recorded video.
The video, which was posted to Facebook, has garnered over four-million views since its posting on March 19.
RELATED: Rare 'rainbow cloud' seen in Brazil
According to AccuWeather, "cloud iridescence occurs when water droplets or ice crystals scatter light."