Rainbow clouds: Rare phenomenon graces Northern Ireland skies
Barra Best
BBC News NI weather presenter
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Rare nacreous clouds have been photographed over Northern Ireland on Thursday morning.
Typically seen at high altitudes closer to the poles, they are a meteorological rarity in Irish skies.
Also known as 'mother of pearl' their occurrence requires specific conditions, namely extremely low temperatures in the upper atmosphere.
Forming in air around -80C, ice crystals reflect the sun, giving the cloud pearly colours.
Some lucky individuals captured the celestial spectacle, taking to social media platforms to showcase the event.
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