RIYADH: Saudi authorities have forecast thunderstorms followed by moderate to heavy rainfall across the Kingdom, with the inclement weather expected to last until Monday. The National Center for Meteorology has forecast moderate to heavy thunderstorms, leading to flash floods and accompanied by hail and dust-stirring winds in parts of the regions of Najran, Jazan, Asir, Al-Baha, Makkah, and Madinah. Light to moderate rain is expected in parts of Eastern Province, Riyadh, Hail, and Qassim, with the chance of fog forming over the southwestern highlands in these areas.