According to the National Center for Meteorology, thundershowers accompanied by hail may occur in part of Jazan, Aseer and Al-Baha, extending to the southern parts of the Makkah highlands. Dust-stirring winds will blow in parts of the Northern Border Region, the Eastern Region, Riyadh and Madinah. The Eastern Region will register high temperatures. Winds over the Red Sea will be northwesterly to southwesterly, at speeds of 10-30 km/h in the northern and central parts, and westerly to northwesterly, at speeds of 20-60 km/h in the southern part. Waves may range from half a meter to over two meters; the sea will be calm to choppy. In the Arabian Gulf, winds will be northwesterly to southwesterly, at speeds of 10-30 km/h in the northern part, and southeasterly to easterly, at speeds of 10-25 km/h in the central and southern parts. Waves may range from half a meter to a meter, and the sea will be calm. Source: Saudi Press Agency