DaleCooper
Established Member
A red sky tends to indicate where the warmer air is; if the wind is in the west it will bring the warmer air towards you and hence the saying is correct for the prevailing winds. However, if we have an east wind then the saying works in reverse.
One caveat is that the warmer air is not always the clearer, drier air... It only has to be clear enough in the general direction to allow enough sunlight through to refract into the reds...
Meteorological mumbo-jumbo, the red sky is caused by millions of rain fairies flying away. They have red backsides.
Incidentally, shouldn't meteorology be the study of meteors?
