The sequence of NDVI anomaly images shows the evolution of the 2010/2011 drought in the Horn of Africa. Following the failure of the short rainy season in late 2010 large areas in southern Somalia and north-eastern Kenya experienced a severe drought as shown by the extended red areas in the December 2010 image (left). In 2011 the first rainy season was also bad, leading again to significant negative NDVI anomalies in the same regions in June 2011 (centre). In July 2011 with the beginning of the dry season the effects of the drought are still visible in southern Somalia, while other areas (e.g., Kenya) are gradually recovering (right).