Two of southern Ethiopia's major coffee-producing regions that produce 60% of the nation's high-quality washed coffees, including the Yirgacheffe and Sidama favored by Starbucks, are expected to see a drop of 58% in production because of disease and water shortages, according to Berhanu Gezahegn, an official at the agriculture ministry's coffee development office, quoted by Bloomberg.

"Output in Sidama region fell as much as 55% and in Gedeo by 62%, Gezahegn said. "There's a big reduction in washed coffee. There was a moisture shortage in the third flowering and a big infestation of coffee berry disease and coffee wilt disease."