Lore - "Red Sky at night, sailor's delight.....

[mf_dolphin]

"Red Sky at night, sailor's delight. Red sky in the morning, sailor take warning."

This one has been around a long time. In fact, compare it with this Biblical passage from Matthew 16:1-3 : "When evening comes, you say, 'It will be fair weather, for the sky is red,' and in the morning, 'Today it will be stormy for the sky is red and overcast.' You know how to interpret the appearance of the sky, but you cannot interpret the signs of the times."

When the western sky is especially clear, there is often a red sunset. That's because as the sun sets, its light shines through much more of the lower atmosphere, which contains dust, salt, smoke and pollution. These particles scatter away some of the shorter wavelengths of light (the violets and blues), leaving only the longer wavelengths (the oranges and reds.) If an area of high air pressure is present, the air sinks. This sinking air holds air contaminants near the earth, making the sunset even redder than usual. This would be the “red sky at night.” In the middle latitudes of the northern hemisphere, weather systems most often approach from the west. Since high pressure generally brings fair weather, this type of red sky at sunset would indicate that clear weather is approaching, which would "delight" a sailor. If the sky is red in the eastern morning sky for the same reasons as above, then the high pressure region has most likely already passed from west to the east, and an area of low pressure may follow. Low pressure usually brings clouds, rain or storms, a warning for sailors.