The people living in one of the largest cities in Mozambique have been warned to expect the "worst-case scenario" as a major hurricane lands.
The cyclone Idai, which has wind speeds of up to 165 km / h, lands near the port of Beira.
Near the low-lying Beira, a city with 500,000 inhabitants, a storm of at least six meters is expected.
In Mozambique and Malawi, 100 people have been killed by heavy rains.
Beira is the fourth largest city in Mozambique and its main port lies at the mouth of the Pungwe River, which runs to Zimbabwe.
Météo France, which oversees French territory in the Indian Ocean, said Idai is "an extremely dangerous tropical cyclone" that fills a "life-threatening" storm surge of at least four meters along the coast and six meters near the Pungwe estuary nearby from Beira.
The rise could be even higher due to the flood, warned Météo France.
The late course change of the cyclone meant that "the worst case is very likely", he added.
Images posted on social media showed considerable damage to Beira as the storm approached and large trees were uprooted.
Mozambique has been hit by hurricanes in the past, including Eline in 2000, when 350 people died and 650,000 were displaced across the region.
Beira has often experienced the brunt of the storms and worked with a range of infrastructure projects to limit the impact of rising water on climate change.
The Global Facility for Disaster Risk Reduction, a group affiliated with the World Bank and the United Nations, says Mozambique is the third most threatened country in Africa when it comes to extreme weather,