In daily life, there are those phenomena that can predict that the sky is going to rain

The clouds thickened and felt very close to the ground.

When it's not too bright, when it's foggy.

Swallows fly low. When ants move, ants are generally able to know if there has been rain recently by the change in humidity in the air. Fish float in the water. Earthworms hit the road.

These are all signs that rain is about to fall.

Here are a few common signs that can signal the arrival of rainy weather:

1.Cloud changes: If the clouds in the sky seem thicker and darker, then this is often a sign of a rainstorm or thunderstorm coming.

2.Change in Wind Direction: If the wind direction starts to change from cold to warm and starts to blow from the south or west, it usually indicates that a rainstorm or thunderstorm is coming.

3.More clouds after a sunny day: If it was sunny before and suddenly there are a lot of clouds in the sky, it usually means that rain is coming.

4.Rising temperatures: For example, if the temperature of the orange fruit continues to rise for several hours, it indicates that a heavy rain or thunderstorm is coming.

5.Increased humidity: If an increase in humidity in the air is felt, then this could also be a sign that rain is coming.

It should be noted that these phenomena are not absolute, and sometimes even if they occur, it may not rain, so it needs to be judged in combination with weather forecasts and actual measurements.

6.Mosquitoes, spiders and other insects appear: In the weather when it is about to rain, insects feel uncomfortable due to the change of environment, so they appear. If you find a large number of mosquitoes or spiders hanging in your room or doorway, it is likely to be a precursor to rain.

7.Changes in bird calls: If you notice that when rain is about to fall, birds will change their calls and may become more nervous, busy, or restless, this is because they are aware of changes in the weather, and if anything changes, they would better know in advance.

When there are dark clouds, a low atmosphere, a drop in temperature, a change in wind direction, lightning and thunder, and a red or yellow sky, it is a sign that rain is coming.

1. Dark clouds: The clouds in the sky are getting darker and darker, and when the clouds are thick, it means that it is likely to rain.

2. Low atmosphere: When the weather becomes unusually hot, the air quality begins to deteriorate, and the atmosphere gradually becomes dull, indicating that the rain is approaching.

3. Calling for a drop in temperature: When the temperature suddenly begins to drop, the body gradually becomes cooler, indicating that rain is coming.

4. Change of wind direction: When the wind direction changes, turning to the southwest or northwest, it indicates that the rain will come soon.

5. Lightning and thunder: Lightning and thunder are both signals that indicate rain, and when they appear, it means that the rain will come soon.

6. The sky is red or yellow: If the sky is red or yellow, it usually appears in the evening or early morning before the rain. This could be an indication that the weather system is shifting and is about to bring precipitation.

The role of rainwater:

Rainwater is an indispensable resource in nature, and it plays a significant role in the ecological environment and human life. Here are the main effects of rainwater:

First, rainwater is a natural irrigation system. It can moisturize plant growth, so that crops can get sufficient water, which is conducive to agricultural production.

Second, rainwater can feed natural water sources. The water can flow directly or indirectly into rivers, lakes and seas to replenish natural water resources.

Third, rainwater cleans the atmosphere and surface, reducing pollution. Through the precipitation, filtration and absorption of rainwater, it helps to reduce pollutants in the air and pollution on the ground.

Fourth, rainwater has a balanced and stable effect on the ecological environment. Rainwater can maintain humidity and temperature, maintain species balance, and maintain the stability of natural ecology.

1. The natural phenomena that want to rain are: the air humidity increases, the air pressure decreases, the sky is dark, the clouds are thick, and sometimes there will be thunder, lightning and wind, and the phenomenon of animals is that ants will move, frogs chirp, and earthworms come out of their holes.

2. When the water on the earth is irradiated by sunlight, it becomes water vapor and evaporates into the air. When water vapour meets cold air at high altitude, it condenses into small water droplets. These small droplets are small, with a diameter of only millimeters and a maximum of millimeters.

They are small and light, held in the air by updrafts in the air. It was these small droplets of water that gathered together in the air to form clouds. For these small droplets to fall to the ground as raindrops, they would have to increase in size by more than 1 million times.

1. Ants move.

The ants that burrow in the ground tremble and feel that if it rains, the hole will be flooded, that is, they will flee before it rains.

Second, the snake aisle, the rain comes.

Most snakes hide in their burrows during the day and go out at night for activities such as foraging, drinking, bathing, and molting. But the weather is particularly humid, and when it is hot, it will also force the sedan to come out of the hole. Therefore, it is a sign of rain when the snake comes out of the hole during the day, especially in late autumn and early winter, when the weather is cold, and the big snake comes out of the hole, and it will rain in a day or two.

It is the verification of "the big snake comes out of the hole, the heavy rain is knocking", and "the snake is in the aisle, the rain is coming".

3. Earthworms come out of their holes.

The ground is damp and soft, and earthworms will crawl out of the ground, indicating that it is going to rain.

Fourth, flying insects fly low.

Generally, before the rain arrives, the humidity of the air will increase greatly, the air pressure will also decrease significantly, the water in the air will condense on their wings, and the wings of insects will become heavy.

5. Rheumatism patients will have sore knees.

In nature, there are swallows flying low, frogs chirping, ants moving, fish swimming in the water, and earthworms burrowing out of branches.

1. Swallows fly low.

When it was about to rain, the weather was hot and muggy, and some small flying insects in the sky flew low with their wings on small droplets of water in the air. In order to prey on these small flying insects, the swallows also fly very low. In addition, when it is about to rain, the air currents in the air are turbulent, and the swallows are affected by the air currents, and they always fly up and down, up and down, high and low.

So, when people see swallows flying low, they know it's about to rain.

2. Frog chirping.

Frogs' ** and organs are sensitive to changes in the weather. Whenever the storm comes, they are in a group and cry loudly. Especially before the arrival of summer thunderstorms, frogs are more concentrated and croaking louder and denser.

3. Ants move.

Ants, creatures that build their nests underground, have been degraded for a long time, making them very sensitive to changes in air humidity. Ants who dig holes in the ground to live know that the hole will be flooded when it rains, and the air moisture leakage will increase before the rain, and the ants will feel that they are in danger at a low place, so they will move to a higher place.

4. Fish swim on the surface.

When it is going to rain, the clouds in the sky are very thick and the air pressure is low, and people feel a little stuffy. The fish usually breathe oxygen dissolved in the water, and when the air pressure is low, the oxygen dissolves less, and the fish will feel stuffy, so they swim to the surface of the water to breathe.

5. Earthworms come out of their holes.

Before the rain, the ground is damp and soft, and earthworms will crawl out of the ground, which is also a sign that it is about to rain.

1. "Hook clouds in the sky, rain on the ground": hook hook clouds refer to cirrus fishing, behind this kind of cloud, there are often fronts (especially warm fronts), low pressure or low pressure troughs moving, indicating that rain is coming.

2. "Fort clouds, rain": Fort clouds refer to Fort Altocumulus or Fort Stratocumulus clouds, which mostly appear in front of low-pressure troughs, indicating that the air is unstable, and thunderstorms generally fall every 8 10 hours or so.

3. The privet leaves are gone.

The leaves of privet grow as they fall. If the summer season is unusually littering and leaves do not grow (or have very few leaves), it indicates that there will be rainy weather in the next 2 to 3 months.

4. Artemisia annua gives birth to white buds.

Artemisia wildensis is found all over China and is a wild plant of the Asteraceae family with strong drought tolerance. If you find a lot of small white buds growing on its roots during a severe drought weather, it is a sign that it will rain soon.

5. Mimosa "shyness".

Mimosa leaves shrink slowly after being touched, or open as soon as the leaves are slightly closed, indicating that the wind and rain are coming; It closes quickly after being touched, but it takes a long time to recover, indicating that the sun will shine brightly in the future.

6. Xishuangbanna wind and rain flowers.

Before the storm, the outside atmospheric pressure decreases, the weather is hot, the transpiration of plants increases, and the bulbs that store nutrients for the wind and rain flowers produce a large number of hormones that promote flowering, and a large number of flowers will be produced.