Khartoum March 1884, troops loyal to the Mahdi Muhammad Ahmad started a siege of Khartoum, against defenders led by British General Charles George Gordon. The siege ended in a massacre of the Anglo-Egyptian garrison when on 26 January 1885 the heavily-damaged city fell to the Mahdists. On 2 September 1898, Omdurman was the scene of the bloody Battle of Omdurman, during which British forces under Herbert Kitchener defeated the Mahdist forces defending the city. In 1973, the city was the site of an anomalous hostage crisis in which members of Black September held 10 hostages at the Saudi Arabian embassy, five
Khartoum main Nile ("see map, upper right") as it zigzags through northern Sudan into Egypt at Lake Nasser. Khartoum is relatively flat, at elevation , as the Nile flows northeast past Omdurman to Shendi, at elevation about away. Under Köppen's climate classification system, Khartoum features a hot arid climate, with only the summer months seeing noticeable precipitation. The city averages a little over of precipitation per year. Based on annual mean temperatures, the city is one of the hottest major cities in the world. Temperatures routinely exceed in mid-summer. Its average annual high temperature is , with six months of the