Drought

A drought is a long-lasting weather pattern of dry conditions with very little or no rain, a period where water availability falls below the requirements of the affected region.

Drought is a phenomena of interplay between resource and human demand, it can lead to shortages in agricultural harvests and food supplies. Droughts are especially harmful in areas where residents depend on farming for livelihood, in these areas, drought can cause famines.
Famous devastating droughts are e.g., the “Dust Bowl” in the 1930s in the central USA, and several in African countries, e.g., in Ethiopia in 1973-74 and 1984-85.