We all know from childhood the lines from the poem by A. S. Pushkin, entitled "Winter Morning", in which the angry blizzard that has spread in the evening is characterized as a haze rushing across the "muddy sky." And the genius Russian poet also has a romantic story "Snowstorm", which we also know from the school curriculum: in it, a fateful weather phenomenon accidentally connects two strangers by marriage. What is it - a blizzard and a blizzard, and how do they differ? Or maybe this is one and the same phenomenon of nature? Let's try to figure it out.
Blizzard - the transfer of snow masses over the earth's surface by a powerful, gusty wind of sufficient strength, and the movement of snow usually occurs in one direction.
Blizzard - a snow storm, accompanied by a strong wind, in which snow swirls and rushes through the air.
The question is ambiguous. According to many dictionaries, a blizzard and a blizzard are synonyms, that is, a blizzard is a type of blizzard. In general, the word "blizzard" is used mainly in everyday everyday speech and works of art. The hydrometeorological service does not know such a term, and it is never used in scientific meteorological literature. In the explanatory dictionary of Vladimir Dal, a blizzard is a word related to a blizzard, along with a note, a blizzard, a drag, dragging, diarrhea and creeping. Moreover, Dahl shares two concepts: "mitel" (blizzard from above) and "metel" (blizzard from below).
Apparently, blizzard and blizzard are closely related concepts, but it is officially accepted to use the word "blizzard", "blizzard" is the popular name for a natural phenomenon. Blizzard - one of the hypostases of a blizzard, the same as a blizzard, snow drift or blizzard. Do not confuse a blizzard with snowfall, when snow falls from the clouds. A blizzard may be accompanied by snowfall, but its main difference is the wind, which lifts up lying snow or throws falling snow to the side.
A blizzard can manifest itself in different ways. It can start as a light winter drift and gradually turn into the strongest blizzard. Meteorologists distinguish between three types of blizzards: drifting snow, blowing snow and the so-called general blizzard. When there is drifting snow, the snow lying on the ground rises and is immediately carried by the wind at a height of no more than two meters. This is possible if the snow is dry and not frozen, and the wind speed is at least 5-6 meters per second. A snowstorm is recorded when the wind carries snow masses in a layer several meters high. The wind speed is at least 7-9 meters per second. There is also the concept of "general blizzard", when the transfer of snow by the wind becomes so intense that it is impossible to determine whether there is now snowfall or only snow raised from the ground is moving in space. In this case, the visibility is very poor, you cannot see the sky and clouds, and the wind speed is from 10 meters per second.
In most cases, it is precisely such a concept as a blowing snowstorm that the people call a blizzard. The intensity of the blizzard is usually such that fragments of snowflakes are already rushing in a vortex flow, while in a general blizzard, snowflakes almost always retain their integrity. The appearance of a blizzard largely depends on the terrain: as a rule, most often it occurs over an uneven surface. The blizzard is also provoked by the variability of the wind, which begins to blow sharply in one direction or the other, causing snow swirls. During a blizzard, snow is deposited on the ground unevenly, somewhere in large masses, and somewhere in a thin layer. During a blizzard, the layers of snow are quite uniform and are characterized by the same, not too high density. Also, during a blizzard, the particles of deposited snow are larger than during a blizzard. A blizzard is more often observed in cyclonic weather (with low atmospheric pressure), and a blizzard in anticyclonic (with high pressure).
- Blizzard and blizzard are closely related concepts, but blizzard is a scientific, official meteorological term, and blizzard is the popular name for blizzard.
- In the common sense of the word, the term "blizzard" in most cases is used when a powerful, gusty wind moves above the ground snow masses in approximately one direction. They say about a blizzard when a strong, changeable wind begins to swirl eddy currents, as a result of which the snow swirls and rushes through the air in all directions.
- A blizzard often occurs over uneven terrain, a blizzard occurs over a flat earth surface.
- In a blizzard, snow is deposited unevenly, in a blizzard - a fairly uniform layer of not too high density.
- In a blizzard, fragments of snowflakes are already floating in the air, in a blizzard, many of them retain their original shape.
- A blizzard is more often observed during cyclonic weather, a blizzard is typical for an anticyclone.