The Meteorological Station in Helwan, which belongs to the Solar Research Laboratory
On Tuesday, 24-4-2018, the Meteorological Station in Helwan has reached the extreme rain. The precipitation rate was 300 mm/h at 9:00 pm exactly. The precipitation rate increased to reach 388 mm/h at 10:40 pm. While this day was sunny and the amount of solar radiation recorded a peak of 900 watts per square meter. !!!