“Red sky at night, sailor’s delight.
Red sky at morning, sailor take warning”—The rhyme is a rule of thumb for weather forecasting, dating back over 2,000 years, based on the reddish glow of the morning or evening sky, caused by haze or clouds related to storms in the region. Due to the rotation of the Earth, storm systems travel from west to east in the mid-latitudes. A reddish sunrise, caused by particles suspended in the air, often foreshadows an approaching storm, which will be arriving from the West, within the day. Conversely, a reddish sunset often indicates that a storm system is on the west side (same side as the sunset), travelling away from the viewer. A similar movement is noted all around the world, in both the northern and southern hemisphere. (via rowchygogo)