Maputo - At least 115 people were killed in Mozambique, Malawi and South Africa after heavy rains affected 843 000 people across southeast Africa, officials and the UN said, prompting calls for emergency aid.
At least 66 people have been killed in Mozambique, 45 in Malawi and four in South Africa following torrential rains that have triggered flash floods.
Mozambique cabinet spokeswoman Ana Comoana said the "government has decreed a red alert due to the continuing rains and the approach of the tropical Cyclone Idai, expected to reach the country between Thursday to Friday".
She spoke to reporters late Tuesday after a cabinet meeting in Maputo to discuss the emergency.
The floods in Mozambique, one of Africa's poorest countries, have already destroyed 5 756 homes, affecting 15 467 households and 141 325 people.