Wednesday to mark summer solstice in Jordan — JMD

Meteorology department forecasts hotter than average season

(File photo: Jordan News)
AMMAN — The director of the Jordan Meteorology Department (JMD), Raed Al-Khattab, announced that Wednesday, June 21, 2023, will coincide with the summer solstice, signaling the beginning of the astronomical summer for this year.اضافة اعلان

Khattab explained that the solstice will occur at 6:55pm. On this day, the sun will rise from the extreme northeastern angle, with an inclination of 61 degrees precisely at 5:30am, and it will set at the extreme northwestern angle, inclined at 299 degrees, at 7:45pm.

This alignment will result in a day duration of 14 hours and 15 minutes, making it the longest day of the year. Conversely, the night will be the shortest of the year, lasting only 9 hours and 45 minutes, Hala News reported.

Seasonal impact and weather patterns
During the summer solstice, the sun will be directly overhead the Tropic of Cancer, situated approximately 23.5 degrees north of the equator.

Khattab noted that the Kingdom typically experiences hot weather and occasional heatwaves during this period due to the influence of the Indian monsoon, which can extend as far as the middle of Europe.

Temperatures can soar above 45°Cin certain regions, particularly in the Badia, the Jordan Valley, and Aqaba. However, there are instances when moderate summer weather prevails as the high-pressure system from the eastern Mediterranean extends over the kingdom, resulting in the cooling effect of west-to-northwest winds.

This leads to temperatures around the average for the summer season.

Historical temperature records and rainfall possibility
Khattab provided historical temperature data, stating that the average maximum temperature in the capital city of Amman during the summer season, calculated from 1991 to 2020, is 32.5°C, while the average minimum temperature is 20.3°C.

The highest recorded maximum temperature in Amman was 43.5°C, occurring on July 30, 2000, and August 20, 2010, which is 11.0°C above the average.

On the other hand, the lowest recorded minimum temperature was 10.2°C, falling 7.2°C below the average, noted on June 31, 1958.

Regarding the entire Kingdom, Khattab mentioned that the highest recorded maximum temperature during the summer season was 50.1°C at the Deir Alla on September 4, 2020.

Conversely, the lowest recorded minimum temperature was 0.4°C at the Shobak station on September 17, 2004. The season may also witness summer rainfall, as evidenced by a recent event in 2012 when Irbid city recorded 9.2mm of rain on June 22.

Heatwaves and seasonal forecasts
According to climate records at the JMD, the capital city of Amman has experienced a total of 72 heatwaves during the previous summer season. The most recent one occurred in summer of 2022, lasting for eight days from August 27 to September 3.

On August 29, 2022, Amman recorded a maximum temperature of 41.4°C, which was 8.5°C above the average for the same day.

Seasonal forecasts from global numerical models indicate that the average temperature during the summer months of 2023 is expected to surpass the average by approximately 0.5°C to 1.5°C in most regions of the Kingdom.

The probability of this forecast reaching 80 percent.

Read more National news
Jordan News