Jordan | High humidity wave continues over the kingdom for several days

Published 2023-08-19 · By Hasan Abdullah

Jordan | High humidity wave continues over the kingdom for several days

TAG- The Kingdom continues to be affected by an exceptionally rare and high humidity wave in the region until the end of the week, although temperatures remain in the early to mid-thirties Celsius in most cities and in the early 40s Celsius or late 30s in the Jordan Valley, Aqaba, and Dead Sea areas.

The high humidity causes a feeling of higher temperatures compared to the actual recorded temperatures, and the large temperature differences between the western areas of the Kingdom and parts of eastern regions continue until the end of the current week.

Temperatures..
Temperatures are recorded around 32 Celsius in western Amman and the elevated western areas of the Kingdom, but they approach 37 Celsius in east Amman, Zarqa, and eastern central areas and around 40 Celsius in the eastern desert, and most of these temperatures are considered typical summer heat, but they coincide with high humidity exceeding 90% during some periods, causing an exhausting feeling of the atmosphere.

Temperatures do not change much..
The high humidity rate causes temperatures to not change significantly during the coming days, as high humidity reduces surface temperatures, but increases the feeling of higher temperatures than recorded during daytime hours, and despite this, the weather becomes noticeably pleasant during the evening, night, and into morning hours.

A slight, imperceptible drop in temperature is expected during the coming days with an additional increase in surface humidity levels, meaning the exhausting feeling of hot weather will continue.

Alert from dense morning fog..
Dense morning fog is expected to continue forming on mountainous highlands and parts of the eastern plains during the coming days, which will significantly increase its chances from Sunday through Tuesday.

TAG advises avoiding strenuous physical effort during midday and afternoon hours and increasing fluid and water intake due to significant perspiration with high humidity waves, and high humidity waves may be more dangerous than strong heat waves to public health due to rapid fluid loss, but they are very beneficial for the agricultural sectors.

The humidity wave may be unprecedented in recent climate records..
The high humidity wave affecting the Kingdom may be unprecedented in recent climate records, meaning the very high amount of water vapor in the atmosphere, as a high dew point of 25 Celsius was recorded in western Amman, and experts at the TAG Regional Center believe the figure reached more than that in the highlands of Salt, Ajloun, and Irbid, which may record a high dew point reaching 26 Celsius.

Dew point is defined as the temperature at which air becomes saturated with 100% humidity and is an important indicator for measuring the amount of water vapor in the air, and typically the Kingdom records at most extreme conditions a dew point reaching only 17-18 Celsius during summer, but recent figures prove sharp changes that occurred to the temperature of Mediterranean Sea water.

The cause of the high humidity wave is due to two important factors, the first being a significant increase in Mediterranean Sea water temperature to record values reaching 32 Celsius in some areas as a result of strong heat waves that struck western and central Mediterranean, and the second factor is the occurrence of sharp and significant thermal inversion, where a hot air mass controls the lower and middle layers of the atmosphere simultaneously with the control of a warm and high humidity air mass from the Mediterranean in the surface layers, causing the trapping of humid and warm air in the lower layers and a significant increase in atmospheric humidity levels.

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