Hail: Definition, Causes, Processes and Phenomena
Introduction
Earth is one of the planets in the solar system and part of the Milky Way galaxy. Our solar system consists of eight planets. Originally this solar system consisted of nine planets but one of the planets was reportedly missing. The planet that was reportedly missing is the planet Pluto. While the other eight planets are the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Those are the eight planets in sequence from the closest to the center of the solar system (the sun) to the farthest. These planets circulate in an orderly manner around the sun without colliding with each other. This is because each planet already has its own orbit, so that it can regularly circle the sun as the center of the solar system.
Among the planets in the solar system, one that can be called a special planet is Earth. Planet Earth is said to be the most special because this planet supports life or can be said to be the only planet that can be used as a home for humans, animals, plants and other creatures. Planet Earth is a planet that has abundant water content and has warm temperatures and is not too hot, so humans and other creatures can live in it. In addition, there is also a lot of oxygen on Earth, making the Earth a place that can be inhabited by humans, animals and other creatures.
This planet Earth when viewed from space will look very beautiful in blue and white. This earth looks like a very beautiful marble. Planet Earth has a spherical shape with a diaphragm at both poles. The poles of the planet Earth are to the north and south of the planet. The poles of the Earth are the areas that get the least amount of sunlight, so the temperature at the Earth's poles is cooler than in other areas that are not at the poles.
The excess of planet earth
Talking about Earth's poles, this Earth has poles on the north and south so it is often referred to as the north pole and south pole. The two poles of the Earth have something in common, that is, there is a lot of ice in a very large amount, even so much and that the area containing this ice is that it is called its own continent, namely the Antarctic Continent. Antarctica is a continent that is foreign but real to humans. Antarctica is an area in the south of the earth or the south pole of the earth. Antarctica was originally functioned as a natural laboratory used to research the earth and its atmosphere, changes in life globally, including changes related to human life.
There is a lot of ice on this earth. Not only at the poles, but this natural ice also occurs in other areas such as in places that have very high altitudes and also in countries that have four seasons. The process of this hail sometimes falls from the sky like rain. This hail is different from snowfall. Even though they are both ice, these two things are very different. One difference is that snowfall can only fall in high regions and in the four seasons. Meanwhile, hail can occur in tropical areas. From the shape is also different.
Definition of hail
This hail in meteorology is also called hail. Hail or hail is precipitation consisting of ice balls. One of the formation of these ice balls is through the condensation of water vapor by cooling it in the atmosphere in a layer above the freezing level. Usually, only large ice occurs in this process. Because of its large size, even though the ice has dropped to warmer temperatures and lower areas, not all of this ice has become liquid (melts). Keep in mind, this hail can not only be imbalanced in subtropical areas, but this hail can also occur in areas around the equator or areas of tropical monsoon division, including in Indonesia. This hail usually occurs less noticeably, and the occurrence of this hail is accompanied by rain water. This hail usually occurs for only a few minutes, then after that it will return to normal rain water as usual.
Causes of Hail Occurrence
If we observe the process of water rain, then we will know that water rain can occur because of the evaporation of sea water which then becomes a cloud containing water, and then the water falls into water drops called rain. But is this the same thing that causes hail to fall? Yes, this is not so different from what causes hail. One of the causes of hail is freezing. Where in this condition, water vapor via cold is attracted to the surface of the ice seeds. Then because of sudden condensation, it forms ice with a very large size. Actually this hail is not a strange and rare natural phenomenon. This hail has happened many times. And the occurrence of this hail could have hit tropical areas, not even during the rainy season. Ice droplets that fall during hail are condensation from rainwater that accumulates on the surface of the earth which are called dark clouds.
Hail, which is usually accompanied by tornadoes, comes from a type of cloud that has a single cell layered close to the earth's surface. Besides that, it can also come from multi cell cloud, this growth is vertical and the horizontal area is about 3-5 kilometers. This hail occurs with a very short duration, between 3 and 5 minutes. The longest hail is 10 minutes long, and even then it is very rare. So usually this ice huja is local and uneven. And this multi-layered species rises vertically to heights of over 30,000 feet. This type of cloud that looks like a cauliflower in layers is called the Cumulo Nimbus or CB cloud which is also the biggest enemy of airplane pilots.
The Process of Hail Occurrence
Regarding hail, which is actually similar to rain water, the question arises, is the process of hail occurring the same as the process of rain water? Water in the entire area of this earth reaches two-thirds of the part, of which one third is land.
Here is the process of hail:
- This large amount of water is stored in a container called the ocean, sea, river, lake, swamp, and so on. Then the water will experience evaporation or it is called evaporation through the help of sunlight. This includes water in the leaves of plants or on the ground.
- The process of evaporation of water (especially from plants) is called transpiration. The water vapor resulting from this evaporation will experience compaction or condensation which then becomes a cloud. Then the clouds move independently to different places with the help of the wind, either wind that blows vertically or horizontally.
- Then the cloud that contains water vapor is blown and arrives at a place where the temperature is colder and reaches a dew point or dew point, then condenses, and because of the severity of this dew it falls into raindrops.
- When it has condensed, has become water, and is blown by the rising thermic wind, to an altitude that has a temperature below freezing, the dew will turn into ice which will fall down. The bonds between ice molecules are stronger than between water molecules, because ice is a solid object. This causes the ice to fall down in an untidy shape, it can be the size of a pebble, but some is up to the size of a fist.
Signs of hail
Actually, we can know the arrival of this hail through certain signs. This hail comes usually accompanied by strong land winds or sometimes a tornado. The fall of this hail can be predicted from the nature or circumstances that are around us. Those of us who are out of the house really need to know this.
- Hail that is accompanied by strong winds usually occurs when the climate in Indonesia changes from the dry season to the rainy season. So that at this time of transition the potential for hail is greater when compared to other times.
- This hail occurs more often during the day or evening. However, it is possible that this hail occurs at night. It's just that during the day or evening there is more potential for this hail to occur.
- One day before the hail fell, the air from morning to night was very hot, and stuffy. This is what is likely to cause cloud clumping to form multi-layered clouds that will cause this hail.
- If around 10:00 am you see a layered cloud or cumulus, and in between the clouds you can see a type of cloud whose border is clear gray and towering like cauliflower, then the cloud changes color to dark black with a fast duration. If you see an indication like this, you can predict that there will be hail and strong winds.
- Look at the plants or trees that are around us. If the branches and twigs start to sway in the wind, it is a sign that rain and strong winds will soon arrive.
- The air around us starts to feel cold which makes goosebumps.
- Hail usually when the first rain comes is a sudden heavy rain. If it rains for the first time with a drizzle, then it indicates that the wind has moved away from where we are.
- If we hear a lightning strike that is loud enough, then there is a possibility that heavy rain accompanied by lightning and strong winds will occur.
- If when entering the rainy season, 1 to 3 days of rain does not occur, then it is likely that the first rain that will fall is heavy rain accompanied by strong winds.
If you feel that you experience or encounter some of these signs, then you need to be aware of the arrival of hail, which is usually accompanied by strong winds
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