21 photos sent in by Hartlepool Mail readers of rare ‘rainbow clouds’

People from across Hartlepool took to social media to share their photos of these stunning ‘rainbow clouds’.

Thank you to everyone who sent the Mail their photos. Unfortunately, we could not include them all.

Nacreous clouds, as they are officially known, are rare clouds that sit high in the sky and are known for the coloured light they reflect before sunrise and after sunset.

These rare clouds usually appear in extremely cold air above polar regions and due to their formation, are also known as mothers of pearls.