3月至5月(MAM)构成了一个重要的降雨季节,特别是在非洲大角(GHA)的赤道部分,MAM降雨占每年降雨量的60%。Analysis of global seasonal climate model predictions from nine Global Producing Centres (GPCs) customised for the GHA region indicates that drier-than-normal conditions are likely over much of Somalia, eastern and northern Kenya, southern and north-eastern Ethiopia, Djibouti, coastal parts of Eritrea, western South Sudan, southern and western Uganda, Rwanda, Burundi, and north-western Tanzania (图1)。在埃塞俄比亚 - 肯尼亚 - 索马里亚,东北厄立特里亚和南苏丹西南部的跨境地区指示了比正常条件更干燥的概率(55%)。另一方面,在坦桑尼亚中部和南部,乌干达东北部,南苏丹东部和埃塞俄比亚西部的部分地区预计比正常情况要湿。