Rare clouds make Yorkshire sky look like cotton wool - BBC News

Rare cirrocumulus floccus clouds are seen across Yorkshire.

Rare rainbow-coloured nacreous clouds seen across Yorkshire

Stunning rare 'rainbow clouds' spotted in skies above Yorkshire - YorkshireLive

Rare 'rainbow cloud' dazzles skies across North West - BBC News

Stunning rare 'rainbow clouds' spotted in skies above Yorkshire

VIDEO: Strange cotton wool clouds stun Argentine residents

Rare clouds make Yorkshire sky look like cotton wool - BBC News

Fallstreak hole: Rare cloud formation pictured in the East - BBC News

Rare rainbow-coloured nacreous clouds seen across Yorkshire

Rare clouds make Yorkshire sky look like cotton wool - BBC News

Rare mother of pearl clouds seen across North East skies - BBC News

Cotton wool clouds hi-res stock photography and images - Alamy