Two Weather Proverbs in Accordance with Yichang's Situation and Their Reasonable Explanations

"The morning glow never dies, and the sunset glow travels thousands of miles."

Weather systems usually move from west to east, and red clouds are formed when the sun shines in at sunrise or sunset. At these two times on the same day, the sun shines into the clouds from a very narrow angle through the thick atmosphere. In this way, the visible light with the shortest wavelength is absorbed by the clouds, that is, green, blue and purple light, so red (complementary color relationship) clouds are formed in the sky. If the morning sky is red, then the east is sunny, so the sun can shine into the foggy western sky. On the contrary, in the evening, the sky in the west of Wan Li must be cloudless in Wan Li, so that the sun can shine into the clouds in the east through the sky in the west.

The sky is full of fish scales, so it doesn't rain when it's windy. Moreover, weather proverbs not only use the sky to mark weather conditions, but also use the shape of clouds to mark them.

"The sky is full of fish scales, no rain and wind."

The sky obviously covered by cirrus clouds (fish scales) stretches for a long time. This high-altitude cirrus cloud indicates that low-pressure clouds move from west to east. This usually increases the wind speed, forms storms in the east, thickens the clouds and produces precipitation in the next 24 hours.

Castle cloud indicates that it will rain tomorrow, which is a clear weather forecast method. "There is a castle cloud in the sky and a thunderstorm on the ground."

In summer, the cauliflower shape of cumulus shows that water rises rapidly and cools, while dry air continues to stay at high altitude. When the castle cloud appears, it shows that warm and humid air and dry and cold air meet at high altitude to produce instability. This castle cloud usually produces thunderstorms during the day.

"The east wind is strong after the rain, and it will rain tomorrow."

"The east wind is insufficient, and it rings in the afternoon."

Because the front is approaching, the rain precedes the wind, so the unstable weather will last for a day or two. Because of the regional storm in downward flow, the wind comes before the rain, so it may rain again in a few hours.

Solar halo may bring midnight rain.

Lunar halo noon wind

"The sun is dizzy in the middle of the night and the moon is dizzy at noon."

The reason why the sun or the moon is surrounded by a halo is because the ice crystals in the high altitude of the earth reflect their light. The high-concentration moisture produced by the dissolution of ice crystals will sink downward to form clouds and rain, so the weather can be predicted more accurately.

Clouds are long in the northwest, and hail is ringing behind them. This is because the cold north wind is usually accompanied by a low pressure system. "Thunder is in pieces, and the river overflows under heavy rain."

This proverb applies to summer, but not necessarily to winter. Air with heavy moisture has greater sound transmission efficiency than dry air, so it can transmit sound to far places. In winter, temperature becomes the main factor. This proverb applies if the air is warm and humid. However, if the weather is very cold, the air density is higher, so it conducts sound better than warm air. At this time, the air is also relatively dry, but the impact on sound propagation is relatively slight. Therefore, even if the sound travels far in the air, it only reflects this cold and dry weather, rather than forecasting rain.