Polar stratospheric clouds (PSCs), also known as Nacreous clouds, created a mother-of-pearl affect in the skies over the North East.
According to the Met Office, Nacreous clouds form in the lower stratosphere over polar regions when the sun is just below the horizon.
The clouds are illuminated from below and often glow in vivid colours and will often remain visible for a couple of hours after sunset and through the night as they are lit by moonlight.
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Nacreous clouds form below -78 °C temperatures and so are most likely to occur during the polar winter.
But there is a dark side to them as well - according to the Australian Antarctic division, nacreous clouds are a major contributing factor in the formation of ozone holes in the Arctic and Antarctic.
If you took any pictures, please feel free to send them in.
