Passage: Rainfall in Dammam is generally sparse, and usually occurs in small amounts in December. However, some winter rainfall has been comparatively heavy, resulting in waterlogged roads. There have also been several notable incidents of hail. Heavy thunderstorms are not uncommon in winter. The thunderstorm of December 2008 was the largest in recent memory, with rain reaching around 3 inches (76 mm). November 2018 has had unusually high rain in Dammam coupled with cooler temperatures.Some unusual events often happen during the year, such as dust storms in summer, coming from the Arabian Peninsula's deserts or from North Africa.

Question: What is the origin of the dust storms in Dammam in November 2018?
Arabian Peninsula's deserts or from North Africa.