The  General Directorate of Civil Defense warns the residents of Riyadh, eastern and southern parts of the Kingdom of changes in the values of pressure and temperature  as of Tuesday accompanied by a mass of cold air  which will relatively affect the Kingdom climates,  accompanied by winds of active speeds up to 50 km/h, and may give rise to dust or dust storms. 

The directorate said that according to the reports issued by the General Presidency of Meteorology and Environmental Protection, the focus will be in the regions of eastern and central of Saudi Arabia and the severity of wind impact  will be on Wednesday and until Friday morning. 

The directorate urges everyone to take caution and stay away from dangerous places, and follow the instructions and guidance in such cases. The activity of the surface winds that cause dust especially on highways and open areas will limit the horizontal visibility to less that 3 km. There is a chance of thunder rains on the Southwestern highlands, Asir region, AlBaha, and other parts of Najran.