MICROBURSTS Meaning and
Definition
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Microbursts are powerful weather phenomena that consist of intense and localized downbursts of air in a thunderstorm. They are characterized by strong, downdraft winds that rapidly descend from the base of a thunderstorm cloud and then spread out horizontally upon reaching the ground. Microbursts typically have a diameter of less than 4 kilometers and last less than five minutes, but their impact can be highly destructive.
The rapid descent of air within a microburst creates a concentrated column of cold, dense air that rushes downwards at high speeds. As this air mass forcefully contacts the ground, it then diverges in all directions, causing strong, gusty winds to spread outwards. These winds can reach extreme speeds, often exceeding 100 knots (185 kilometers per hour), and sometimes even exceeding 150 knots (280 kilometers per hour).
Due to their brief duration and localized nature, microbursts pose a significant threat to aviation, especially during takeoff or landing when low-level wind shear can severely impact aircraft control. They can also cause significant damage to structures, trees, and power lines on the ground. Meteorologists use advanced radar systems and weather forecasting models to detect and predict the occurrence of microbursts, allowing for improved safety measures and warnings to be issued.
In summary, microbursts are powerful and highly concentrated downbursts of air associated with thunderstorms, characterized by rapidly descending, high-speed winds that spread out upon contact with the ground. They are compact in size, short-lived, and have the potential to cause severe localized damage, particularly to aviation operations.
Common Misspellings for MICROBURSTS
Etymology of MICROBURSTS
The word "microburst" is formed by combining two terms: "micro" and "burst".
The term "micro" comes from the Greek word "mikros", meaning small or little. It is commonly used as a prefix in scientific and technical contexts to denote something very small or on a small scale.
The word "burst" refers to a sudden, brief release or outpouring of something, often with a strong or explosive force. It originates from the Old English word "berstan", which has the same meaning.
So, when combined, "microburst" refers to a small-scale, intense, and localized air current phenomenon characterized by a powerful downward flow of wind. This term is typically used in meteorology to describe a brief and powerful downdraft that can occur during severe thunderstorms.
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