There is an old saying that came from England. It goes: «Red sky at night, shepherd's delight. Red sky in the morning, shepherd's warning». How should this mysterious phrase be deciphered?
It is believed that, judging by when the sky turned red or pink, shepherds could predict whether good weather for grazing livestock would soon arrive.
For example, if the sky was red late in the evening, at sunset, it meant that the next day the weather would be pleasant and, most importantly, dry.
But if the morning tinged the clouds with a blush, it meant that the good weather had already been and gone. Rain, wind and dark clouds await us, and if we are really unlucky, perhaps even thunderstorms before the day is out.
Meteorologists confirm that such sayings are accurate. The secret is that they are all linked to atmospheric pressure, which governs the weather.
The reddish color of the sky in the morning occurs because a high-pressure weather system is moving east, opening the way for low pressure, which usually means rain.
At sunset, the pink hue appears because the sun, as it sets, illuminates a multitude of dust particles under high pressure.
