Siege of Khartoum was given a credit of £100,000 and was promised by the British and Egyptian authorities "all support and cooperation in their power.". On his way to Khartoum with his assistant, Colonel Stewart, Gordon stopped in Berber to address an assembly of tribal chiefs. Here he committed a cardinal mistake by revealing that the Egyptian government wished to withdraw from Sudan. The tribesmen became worried by this news, and their loyalty wavered. Gordon arrived at Khartoum on 18 February 1884, but instead of organising the evacuation of the garrisons, set about administering the city. His first decisions were to reduce the
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