Darkness enveloped the main arteries of the capital city such as Qassim, King Fahd, Khurais and Makkah roads because of the storm which started at about 12 noon, said Benny M. Quiambao, a Filipino building contractor. Drivers slowed down and switched on their hazard lights as visibility dropped to zero, he said.

Earlier, the Presidency of Meteorology and Environment (PME) had warned that a sandstorm was approaching Riyadh with a one-meter horizontal visibility. Director General of Health Affairs in Riyadh Dr. Adnan bin Sulaiman Al-Abdulkarim, announced at 3 p.m. yesterday that hospitals under the Ministry of Health were ready to admit dust-hit patients. Other regions like Qassim and Hail had also been affected. The sandstorm started at 8:30 in the morning in Qassim, followed by rains at about 12:15 in the afternoon.