The National Network Stations of the Saudi Geological Survey (SGS) detected four earth tremors ranging from 3.1 to 3.5 on the Richter scale and were at a depth of 8.7 km to 9.5 km in Harat Al-Shaqa. SGS also said the earth tremors occurred during the period from 12 pm on Friday to 12 pm today, adding that a number of tremors measuring less than 3 on the Richter scale were detected. However, SGS confirmed that no volcanic fumes were detected, and the thermal measurements are normal.