A rare case under surveillance: Doubts of snowfall in some regions of Saudi Arabia at dawn on Sunday

Arab Weather - In a rare case in the Kingdom of Saudi Arabia, the weather forecast team at the Arab Weather Center closely monitors the increasing indications of the possibility of snowfall in parts of the Kingdom during the night of Saturday / Sunday and until the morning of Sunday.

Details of the air instability that begins on Friday night / Saturday and intensifies on Saturday

The results of the computer treatment indicate that, starting from late hours on the night of Friday / Saturday, regions in the Kingdom will begin to experience unstable weather conditions, represented by the increased chance of thunderstorms of rain accompanied by showers of hail in several parts of the governorate of Medina that extend gradually In the late hours of the night and at dawn on Saturday to the city of Hail and most of the cities of the province.

With the hours of the day on Saturday, the opportunities for thunderstorms extend to include, in addition to Hail and Medina, the highlands of Makkah Al-Mukarramah, Taif, Tabuk heights and some western coastal areas.

And with the advent of the evening hours, strong marine exits begin to form off the coast of the Red Sea opposite the coasts of Medina, specifically the cities of Yanbu and Rayyes, and these marine exits are in the form of thunderstorms of torrential rain that are accompanied by hail and strong gusts of winds.

Showers of rain at night extend to the northern borders, Rafha and Arar, in addition to Al-Jawf, Sakaka, the Saudi-Jordanian border, and several parts of Tabuk.

A state of atmospheric instability collide with the expansion of a very cold and Siberian air mass and opportunities for snowfall!

As for the hours of Saturday / Sunday night and Sunday dawn, the weather forecast team at the Arab Weather Center monitors the possibility that the expansion of a very cold and Siberian air mass bursting collide with the Siberian air height extending from the north and northeast with the expansion of unstable weather conditions coming from the west and Southwest. This convergence of the two weather systems leads, in some rare cases, to snowfall in areas with unusual snowfall.

The computer processing results indicate through numerical modeling of the movements of air masses that potential collision zones on Saturday / Sunday night, dawn and Sunday morning that are likely to cause snowfall include:

1) The city of Hail.
2) Several parts of Hail Governorate, especially the southern and eastern parts of it.
3) The city of Al-Wall, west of Hail.
4) The road connecting Medina and the city of Hail.
5) The western mountains of Hail Governorate, and the eastern mountains of Madinah Governorate, and to the east of Khaybar.
6) The road connecting the doorway to the wall.
7) Several parts of the northern border and areas near Al-Turaif, Arar and Rafha.

It is not possible to know whether snow accumulations will occur on these areas after snowfall, but there will be a field-based follow-up of the weather situation to find out. It is also worth noting the importance of monitoring the places where a collision may occur due to the possibility of their change, for example some computer modeling indicates that another collision may occur between the Siberian winds and atmospheric instability to the north and east of Al-Qassim Governorate, in addition to parts close to Hafar The sub.

Strong winds with strong gusts are expected with the condition

In view of the deepening of the Siberian air height significantly in the eastern and central parts of the Kingdom, and coinciding with a large extension of the Red Sea Depression on the western and northwestern parts of the Kingdom, strong south-eastern winds are expected to blow over large parts of the western and northern parts of the Kingdom and be accompanied by grants. Sometimes severe, in parts of Hail Governorate, the eastern mountains of Medina. Strong winds also prevail over parts of Al-Jawf, Al-Dawadmi and the western coasts of Tabuk, the northern borders, and Wadi Al-Dawasir. And these winds may cause dust and dust waves in areas that will not be exposed to rain.

Heavy thunderstorms are expected in the city of Jeddah from Saturday evening until Sunday afternoon

On a related level, it is expected that the city of Jeddah will experience the strongest rainy situation this season, as it is expected that the chances of rain will gradually increase, starting from the hours of Saturday evening, through the arrival of some marine exits to the city, which are in the form of cumulative thunderstorms, sometimes heavy rain, and accompanied by Strong wind.

And with the hours after midnight and on Sunday morning, it is expected that these sea exits will increase in intensity so that the thunderstorms will fall in intervals and be heavy and accompanied by strong winds and perhaps hail.

It is feared from these rains that the water level will rise in the rainwater gathering areas, and that torrents will occur in the eastern mountainous heights adjacent to the city.

And the chances of rain remain sporadic, separated in time and geographically, after Sunday afternoon and until Monday evening, and they are in limited and geographically narrow areas.

This and God knows.

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