Home   News   Article

‘Why’s the rainbow upside down grandma?’...So why was it?




The circumzenithal arc
The circumzenithal arc

An unusual weather phenomenon was spotted by a seven-year-old on Saturday.

The upside down rainbow, also known as the circumzenithal arc, was noticed by Ella Pryer, with the photograph sent to us by her grandmother Cheryl Spratt.

This type of rainbow is rarely seen because they appear so high in the sky and are created by sunlight bouncing off ice crystals high in the atmosphere.

The ice crystals form wispy cirrus clouds and these are usually formed at between 18,000 and 40,000ft.

In order to be able to see a circumzenithal arc, a combination of atmospheric conditions must coincide at just the right time.



COMMENTS
()


Iliffe Media does not moderate comments. Please click here for our house rules.

People who post abusive comments about other users or those featured in articles will be banned.

Thank you. Your comment has been received and will appear on the site shortly.

 

Terms of Comments

We do not actively moderate, monitor or edit contributions to the reader comments but we may intervene and take such action as we think necessary, please click here for our house rules.

If you have any concerns over the contents on our site, please either register those concerns using the report abuse button, contact us here.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies - Learn More