What are the signs of rain?

1. It is sultry in the morning, which is generally a sign that the low-pressure weather system is approaching, and there is often heavy rainfall in the afternoon. 2. In the morning, I see a pagoda-shaped ink cloud uplift in the distance, and there will be a strong thunderstorm in the afternoon. It has been clear and cloudless for several days, especially hot. Suddenly, I saw a small cloud rising on the windward slope of the mountain, and there was usually a strong thunderstorm at midnight or early morning. On a hot night, hearing the dull thunder not far away is generally a sign that a storm is coming. When you see funnel-shaped clouds or dragon tail clouds on the horizon, it means that the weather is extremely unstable and thunderstorms and strong winds may come at any time.

Which animals have signs when it rains?

Swallows fly low: because they want to eat insects. When it rains, there is a lot of water vapor in the air, which makes the wings of some insects wet, just like the plane is too heavy to fly, but it still has to fly and can only fly against the ground. Secondly, the weather turned rainy, the air pressure became lower, the water vapor in the air increased, and some small insects in the soil climbed out of the soil and had to fly low to catch insects.

Goldfish floating: fish live by breathing oxygen dissolved in water. On a sunny day, when the air pressure is high and there is a lot of dissolved oxygen in the water, it quietly sinks to the bottom of the water; Before the rain, the air pressure was low, the oxygen in the deep water was greatly reduced, and the fish floated to the surface to breathe.

Dogs stick out their tongues: dogs have no sweat glands. In summer, they can't rely on pores to dissipate heat. They only keep constant temperature by opening their mouths and pulling their tongues to dissipate heat. When their mouths and tongues are useless, they jump into ponds or streams to help dissipate heat, indicating that it is going to rain.

Snake aisle: Most snakes hide in caves during the day and go out for food, water, bathing and molting at night. However, when the weather is particularly humid and sultry, they will be forced out of the cave. Therefore, snakes coming out of caves during the day is a sign of rain.

What are the natural phenomena before it rains?

There are four natural phenomena before it rains, namely, thunder, lightning, wind and dark clouds.

1, thunder is a natural phenomenon. When it rains or before it rains, the clouds in the sky have some positive poles and some negative poles. When two kinds of clouds meet, they will emit lightning and a lot of heat, which will make the surrounding air heat and expand. Instantly heated and expanded air will push the surrounding air and produce strong explosion vibration. This is thunder.

2. Lightning Lightning is a strong discharge phenomenon between clouds, between clouds and the ground, or between different parts of clouds. Usually, storm clouds will generate charges, with negative charges at the bottom and positive charges at the top. They will also generate positive charges on the ground and move with the clouds.

3. There is wind because the pressure distribution in the horizontal direction is uneven, and the horizontal motion components of uneven air in the horizontal direction include direction and size, that is, wind direction and wind speed. In terms of flight, it also includes the vertical motion component, that is, the so-called vertical or ascending and descending airflow.

4. Dark clouds Dark clouds are clouds whose colors change after the water droplets condensed by saturated steam and supersaturated steam in white clouds become larger and larger, which is a natural phenomenon. There are many kinds of dark clouds, such as layered clouds, isolated cumulus clouds and wave clouds.

What are the proverbs of rain omen?

1. The bees are late, and the weather will be fine tomorrow.

The fish jumped out of the water, and the wind and rain came.

Dragonflies fly low, so take a hat when you go out.

4. Black dragonflies are chaotic, and the weather will be dry.

Don't twist before it rains, and don't twist long after it rains.

6. Rain lays eggs, which fell to the Ming Dynasty to eat.

7. The rain wheezes and the river overflows.

8. Clouds turn east, rain turns wind, clouds turn south, water waves ripple, clouds turn west, and clothes are put on the ground.

9. Clouds start from the northeast, and there will be wind and rain.

10. When it rains in early autumn, you get everything, and when it rains in summer, you get nothing.