Jordan | Archive of weather conditions that affected the Kingdom during the fall of 2021

Arab Weather - The weather forecast staff in the Arab Weather Center archives the most important data of the autumn season 2021 for the purposes of future reference and integrating it with the data of the upcoming winter season, God willing, for the purposes of knowing the performance of the rainy season in general. Atmospheric stability and others that affected the Kingdom during it for a period extending from September to the end of November, in line with meteorology, which ends the autumn (climatically) season with the last day in November as follows:

The total air depressions that affected the Kingdom during the fall season 2021:

23-24/September/2021: Atmospheric depression of the first degree (the weakest ):

At the end of September, the Kingdom was affected by the first air depression of this season, accompanied by an air mass that was colder than usual, which was classified as first-class according to the Arab weather index to measure the severity of the depressions. With rain and hail showers in the north and center of the kingdom, and the rain reached the peaks of the Sharah Mountains, the rain was heavy for some time, causing the water level to rise in some roads.

The total cases of air instability that affected the Kingdom during the fall 2021:

19-21 / November / 2021: the case of medium () of the instability of air:

As a result of the presence of an air depression centered off the coast of Egypt and a cold and humid air mass in all layers of the atmosphere, coinciding with the extension of the Red Sea depression, a state of atmospheric instability has arisen, which is the most severe and extensive since the beginning of the season. Relatively cold during the day and noticeably cold at night.

With the appearance of large amounts of clouds and rain falling on many random areas of the Kingdom, affecting the regions, including the main cities, the capital Amman, the Badia regions and the southern highlands.

Which led to the flow of a number of valleys and the rise in the water level in the roads, and the occurrence of rockslides in the south of the Kingdom. The rain water also stormed a school in the Al-Salt Governorate.

13-14 / November / 2021: the case of (weak) of the non - air stability:

During that period, the Kingdom was affected by another weak state of atmospheric instability, which brought medium and high clouds, interspersed with cumulus clouds that rained in random areas concentrated in the Badia areas and led to the flow of some torrents in those areas.

29 / October - 1 / November / 2021: the case of (weak-medium) of the lack of air stability:

In that period, the Kingdom was affected by another state of instability that affected for several days, bringing medium and high clouds, interspersed with cumulus clouds that caused thunderstorms in random areas that included parts of the main cities, and the Eastern Badia, accompanied by downward winds that formed dust waves in the Badia regions. .

11-15 / October / 2021: the case of (weak) of the non - air stability:

During that period, the Kingdom was affected by a state of atmospheric instability, accompanied by thunderstorms, which led to rain accompanied by lightning and thunder on random areas. The thunder rain included the main cities, including the capital, Amman. The thunder clouds were accompanied by downward winds that raised dust and dust.

Other weather conditions that affected the Kingdom during the fall 2021:

11-13/October/2021: Extension ( Siberian High ):

The Kingdom was affected by an early extension of the Siberian Highlands that coincided with the presence of the Red Sea depression, which brought a significant drop in temperatures, and the weather became cold during the day, and the weather increased significantly at night in all regions, even in the Jordan Valley, the sea and Aqaba, and the smallest turned to less than 10 degrees, coinciding with With the blowing of cold and dry easterly to southeasterly winds, the speed is active and accompanied by strong gusts that exceed the 70 km/h barrier on the mountainous heights and the Shafa Ghoria regions. The winds increased the feeling of coldness and formed dust waves that affected many regions of the Kingdom, including the capital Amman.

Percentage of rainfall rates achieved in different regions of the Kingdom during the fall season 2021:

1- Northern regions: 5%

2- Western Central Regions: 4%

3- Central Eastern regions: 11% (the highest percentage )

4- Southwest regions: 5%

5- Southeast regions: 6%

6- Aqaba (King Hussein International Airport): 6%

7- Eastern regions: 7%

8- Northern Jordan Valley: 8%

9- Central Valleys: 7%

10- Southern Jordan Valley: 2% (the lowest percentage )

General information about the fall semester 2021:

• Number of depressions by degree:

- First: ( 1 )
Second: ( nothing )
Third: ( nothing )
Fourth: ( nothing )
Fifth: ( no )

• Number of cases of atmospheric instability by severity:

Weak: ( 2 )
- weak to medium: ( 1 )
- Medium : ( 1 )
Medium to strong: ( none )
Strong: ( no )
Total ( 4 ).

• Intensity of autumn performance: (weak)

Note : The source of the percentage of the achieved rainy season rates is the Jordanian Meteorological Department, and the rest of the archived data are from the data of the Arab Weather Company.

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