Arab weather - It is expected that the semi-tropical air altitude will weaken in the west of the Kingdom, which allows the penetration of air currents with temperatures below their normal rates towards the west and southwest of the Kingdom, while temperatures continue to be higher than their rates in the eastern and central regions, and coinciding with these weather conditions prevail. Unstable weather in parts of the south, south, west and west of the Kingdom, gradually intensifying during the week.
Hot to very hot weather prevails in all regions of the Kingdom and moderate over the southwestern highlands, so that temperatures are at the end of forty degrees Celsius in parts of the eastern region during the week, and winds are light to moderate in speed throughout the eastern and central regions, while they are northwesterly active on The western and southwestern regions raise dust and dust, which may reduce horizontal visibility in some areas.
In the details, westerly winds loaded with large quantities of relative humidity rush in the various layers of the atmosphere from semi-tropical regions, towards the heights. The Kingdom and gradually with the afternoon and evening hours of a seasonal rain wave, which begins in the southwestern highlands at the beginning of the week, over Jizan, Asir and parts of Al Baha and Taif, and its area expands in the middle of the week to include parts of the Makkah Al-Mukarramah region, the holy sites, Madinah and Tabuk.
However, the amounts of moisture decrease in the north, becoming drier and their bases becoming more high, especially in the heights of Madinah and Tabuk, which leads to the evaporation of part of the rain before it reaches the surface of the earth, so the surrounding air cools and increases in weight, so it rushes towards the surface of the earth directly, which It leads to the formation of dust in a local and limited way.