‘Red sky at night, shepherd’s delight’ – is there scientific evidence?

A good sign? Sunset at Tynemouth, Tyne and Wear. Photograph: Owen Humphreys/PA

Is there any scientific basis for the saying “Red sky at night, shepherd’s delight; red sky in the morning, shepherd’s warning”?

Jo Turner, Wolstanton, Newcastle-under-Lyme, Staffs

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