What is downwind?

Arab Weather - Many of the downside winds appear in weather forecasts, especially when the effects of atmospheric instability. What are downward winds, how do they arise and what damage they cause through the following report.

What is downwind?

A downburst wind is defined as a strong surface wind that emanates from an upper source and strikes the Earth's surface radially, in straight lines in all directions. It is often harmful winds.

The phenomenon of downward winds is accompanied by cumulus thunderclouds, especially dry ones. The phenomenon of downward winds is frequent in the Arabian Peninsula and Transjordan, especially in the autumn season.

How do downwinds arise?

Before entering into how the downward winds arise, it is necessary to refer to the physical properties of moist and dry air, and warm and cold air. Dry cold air is heavy in weight and dense, while warm, moist air is less in weight and density compared to dry cold air, as moist air is less in weight than dry air.

Here it can be noted that downward winds arise due to the rush of dry winds to wet winds and vice versa, which causes strong cooling as a result of the process of evaporation of water vapor, especially when the lower layers of the atmosphere dry out and moisture is present in the middle and high layers of the atmosphere during the influence of cumulus clouds.

This means the formation of downward air currents towards the earth due to the difference in the volume and density of cold and hot air, and the speed of downward winds in some thunderstorms may reach 240 km / h.

What are the damages that may be caused by downward winds?

• Sand storms and dust waves form in desert areas.
• Breaking trees and flying lightweight objects when the winds are strong, which may cause a danger to the life of pedestrians.
• Damage, and possibly damage to, farms.

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