Red Sky in the Morning, Sailors Warning

May 23, 2025
Featured image for “Red Sky in the Morning, Sailors Warning”

Weather folklore, like any folklore, is deeply rooted in patterns that were observed by individuals many years ago. Hundreds to even thousands of years ago, people had very little understanding of how the weather works. Since they did not have TV, radio, or the Internet, they would keep track of what happened each day. Sometimes they would find a pattern that repeated itself and then used this to make a weather prediction. Some weather folklore seems to be linked to cloud formations in the sky, while others are linked to plants and animals.

“Mackerel Sky, Mackerel Sky, not long wet and not long dry.” This piece of folklore is deeply rooted in mariners’ weather books as a sign of a rapidly approaching storm. The Mackerel Sky part is the description of the cirrocumulus clouds that can occur ahead of an approaching storm. These clouds are very high in the atmosphere, usually above 20,000 feet, and are somewhat fluffy like cumulus clouds. At sunset or sunrise, these clouds are highly reflective of light and sometimes are seen as a blanket of deep orange or red colors. The “not long wet, not long dry” part comes from the fact that storms associated with Mackerel Skies are usually fast-moving storms, so the rain arrives quickly and then probably moves out by the next day.

Another famous mariner saying is, “Red sky at night; Sailors delight; Red sky in morning; Sailor’s warning.” The red sky comes from the low sun angle in the morning and evening that travels through a thicker part of the atmosphere. This results in the sunlight hitting many particles that scatter the warmer colors of red and orange. If the sky is red in the evening, then the western sky must be clear, so no storms are on the horizon. The red sky in the morning means the eastern sky is clear and clouds must be approaching from the west. Therefore, a storm is approaching.

Here is a great one for fishing fanatics (like me): “When trout refuse bait or fly, there is ever a storm nigh.” This probably is just a way for fishermen to blame the weather if fish are not biting. Most fishermen I know are oblivious to the weather if the fish are biting.

“To know when the first frost will end your growing season, count six months from the first thunderstorm of the year.” We had thunderstorms in early April, so that would put the first frost for the area in early October. This might be a little early, but we will know in six months.

“Doors and drawers stick before a rain.”

When doors and drawers were made with wood, this seems like a good piece of folklore. When humidity rises, wood will absorb some moisture, and that causes the wood to expand and make doors and drawers harder to open. Rising humidity usually means rain is on the way.

“When pipes smell stronger, it’s going to rain.” and “When ditches and ponds offend the nose, Look for rains and stormy blows.”

Odors tend to adhere to molecules of moist air much better than dry air. The humidity helps to hydrate the aromas and make them stronger, so we can smell them better.


Share:

Weather folklore, like any folklore, is deeply rooted in patterns that were observed by individuals many years ago. Hundreds to even thousands of years ago, people had very little understanding of how the weather works. Since they did not have TV, radio, or the Internet, they would keep track of what happened each day. Sometimes they would find a pattern that repeated itself and then used this to make a weather prediction. Some weather folklore seems to be linked to cloud formations in the sky, while others are linked to plants and animals.

“Mackerel Sky, Mackerel Sky, not long wet and not long dry.” This piece of folklore is deeply rooted in mariners’ weather books as a sign of a rapidly approaching storm. The Mackerel Sky part is the description of the cirrocumulus clouds that can occur ahead of an approaching storm. These clouds are very high in the atmosphere, usually above 20,000 feet, and are somewhat fluffy like cumulus clouds. At sunset or sunrise, these clouds are highly reflective of light and sometimes are seen as a blanket of deep orange or red colors. The “not long wet, not long dry” part comes from the fact that storms associated with Mackerel Skies are usually fast-moving storms, so the rain arrives quickly and then probably moves out by the next day.

Another famous mariner saying is, “Red sky at night; Sailors delight; Red sky in morning; Sailor’s warning.” The red sky comes from the low sun angle in the morning and evening that travels through a thicker part of the atmosphere. This results in the sunlight hitting many particles that scatter the warmer colors of red and orange. If the sky is red in the evening, then the western sky must be clear, so no storms are on the horizon. The red sky in the morning means the eastern sky is clear and clouds must be approaching from the west. Therefore, a storm is approaching.

Here is a great one for fishing fanatics (like me): “When trout refuse bait or fly, there is ever a storm nigh.” This probably is just a way for fishermen to blame the weather if fish are not biting. Most fishermen I know are oblivious to the weather if the fish are biting.

“To know when the first frost will end your growing season, count six months from the first thunderstorm of the year.” We had thunderstorms in early April, so that would put the first frost for the area in early October. This might be a little early, but we will know in six months.

“Doors and drawers stick before a rain.”

When doors and drawers were made with wood, this seems like a good piece of folklore. When humidity rises, wood will absorb some moisture, and that causes the wood to expand and make doors and drawers harder to open. Rising humidity usually means rain is on the way.

“When pipes smell stronger, it’s going to rain.” and “When ditches and ponds offend the nose, Look for rains and stormy blows.”

Odors tend to adhere to molecules of moist air much better than dry air. The humidity helps to hydrate the aromas and make them stronger, so we can smell them better.


Share: