source: www.facebook.com

Here is a natural phenomenon called a “Fire Rainbow” that recently appeared over the skies of Singapore! This unusual rainbow formation and shapes was witnessed by thousands of people in the city-state and quickly became a hot topic with local people and online viewers worldwide!

It is called a fire rainbow because it looks like the seven colors of the rainbow is a swirling and burning shape in the sky as shown in the various images below. This particular “fire rainbow” appeared in the skies above northeastern Singapore at around 5 o’clock in the evening on February 20th.

source: www.facebook.com

source: www.facebook.com

Here is a different post of the “fire rainbow”.

source: www.facebook.com

source: www.facebook.com

This phenomenon is said to be a “horizontal arc” which is a type of atmospheric optical phenomenon that that occurs when when sunlight refracts ice crystals that are positioned within a narrow combination of altitude and horizon of the atmosphere. In this case, the “fire rainbow” was in a thin cloud horizon approximately 46 degrees under the sun while the sun’s altitude was 58 degrees or higher.

A “fire rainbow” is difficult to see so it was quite a surprise to witness this spectacular scene over the skies of Singapore!