Rare.
Before the strong storm the previous day in Bangkok, local residents have witnessed a rare atmospheric phenomenon. From storm clouds appeared shining bright hat.
This phenomenon is also called iridescent clouds. Unusual rainbow appear due concentrations of water droplets about the same size.
the Formation of a cloud cap over the Cumulus cloud shows that the lower cloud is expanding up and can turn into lightning.
Anna Lysenko
Even more interesting about the nature
