Londoners woke up in panic, awe and confusion as a Saharan dust cloud turned parts of the capital's sky orange on Wednesday morning.
Social media was taken over by dramatic snaps of the skies, with many debating whether the hue was actually red, yellow, green or sepia. "Anyone notice the sky over London is a weird yellow sepia colour?!
what is happening?" one person tweeted while another said: "There is a really horrible coloured sky in West London this morning.
Everything has a slight green tinge about it." Now Met Office forecaster Richard Miles has explained why the sky has changed colour. "The orange effect is caused by the Rayleigh scattering, which is the same effect that gives you the blue sky," he said. "The additional dust will scatter the blue light and create more red light effects which gives sunsets their distinctive colour.
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