“The term” cyclone “in Greek means” spin. “It is an atmospheric large-scale vortex with low pressure in the center. The air rotates in the Northern Hemisphere in a counterclockwise direction, in the Southern hemisphere it is clockwise.Cyclones, as a rule, bring with them difficult weather conditions – cloudiness, precipitation, wind strengthening, often seasonal phenomena: thunderstorms, fogs, snowstorms, ice . It is characterized by the distribution of pressure and the nature of the air circulation.
There are two types of cyclones, one is the small whirlwind common on the ground. This kind of whirlwind is changed rapidly when the air flows around the ground like trees, hills, buildings, etc., or when the air and the ground rub. The direction of its advancement will produce a vortex that moves with the airflow, causing no major harm to humans. The other is a large cyclone that occurs on the ocean and is called differently in different places.
A tropical cyclone is one of the most dangerous vortexes. It is thanks to the low pressure in the center that it moves with a huge speed that grows due to the planet’s rotations. Depending on the speed of these cyclones, they were divided into several types. Here are some of them:
depression at a speed of up to 17 meters per second;
Hurricanes – speed exceeds the mark of 39 meters per second;
storms – up to 38 meters per second.
If the cycloneapproaches us in the summer, we must prepare ourselves for the deterioration of the weather. Warm air is sucked up, cooled, clouds are formed, precipitation falls out. This weather lasts no more than a week.
have a diameter of the order of 2-3 thousand km or more. the weather in the cyclone of the extratropical latitudes is inhomogeneous: the front and rear parts of the cyclone are distinguished the left and right parts arein relation to the direction of its motion. in the anterior part of the cyclone continuous layered cloud cover of the warm front prevails complex sediments with winds of the southern quarter of the horizon. in the rear of the cyclone behind the cold front the weather is unstable with rainfall precipitation a gusty wind of the north-western and northern quarters; cloudiness can be with breaks and even with short-term clearings and in summer it will be of a convective type. the left most often northern part of the cyclone is characterized by weather conditions which can be called intermediate between the front and rear parts of the cyclone; the winds ofthe eastern and north-eastern quarters predominate the clouds are solid precipitation is complex falling with interruptions and gradually turning into a short-term shower type. the right southern part of the cyclone for some period of his life is a warm sector it is filled with a warm air mass which eventually pushes up. here depending on the season and type of air mass the weather can be very different but it is mostly without significant precipitation with fog or low thin layered clouds often cloudless and always warm with winds of the southern and south-western quarter