Torrential rains have killed more than 100 people across Southern Africa, forcing mass evacuations and rescue operations as authorities warn that more destructive weather may still be to come.

Weeks of heavy rainfall have battered South Africa, Mozambique and Zimbabwe, overwhelming rivers and infrastructure and leaving entire communities cut off. Weather services across the region have issued further alerts, raising fears of additional flooding.

In South Africa, officials said on Friday that flooding in the northern provinces of Limpopo and Mpumalanga had killed at least 30 people.

Army helicopters have been deployed to rescue residents trapped on rooftops and in trees as swollen rivers swept through towns and villages. Security personnel were also evacuated from a border checkpoint with Zimbabwe after floodwaters surrounded the area.

President Cyril Ramaphosa toured affected parts of Limpopo on Thursday, saying the province had received about 400mm (16 inches) of rain in less than a week. In one district, he said, “there are 36 houses that have just been wiped away from the face of the earth.”

Limpopo Premier Phophi Ramathuba said more than 1,000 homes had been damaged across the province. “It’s so terrible,” she said.

In neighbouring Zimbabwe, the government’s disaster management agency reported at least 70 deaths since the start of the year, with more than 1,000 homes destroyed, and schools, roads and bridges collapsing under the force of the floods.

Mozambique has been the hardest hit. Its disaster management authorities said 103 people had died during an unusually severe rainy season since late last year. The figure includes deaths caused by flooding, lightning strikes, infrastructure collapse and a cholera outbreak linked to contaminated water supplies.

More than 200,000 people have been affected nationwide, with thousands of homes damaged and tens of thousands facing evacuation, according to the World Food Programme. The agency warned that flooding has submerged more than 70,000 hectares (173,000 acres) of crops, deepening food shortages for small-scale farmers in a country already struggling with poverty and repeated cyclones.

The United States Famine Early Warning System said flooding was reported or expected in at least seven Southern African countries, possibly linked to the La Nina phenomenon, which often brings heavier rainfall to the region.

South Africa’s Kruger National Park has also been hit, with about 600 tourists and staff evacuated from flood-affected camps. Park authorities said no deaths or injuries had been reported, but large areas remain inaccessible after rivers burst their banks.

Southern Africa has endured a series of extreme weather events in recent years, from deadly cyclones to severe droughts, exposing the region’s vulnerability to climate-driven disasters and fragile infrastructure.