Heavy storms hit Lobito late Wednesday, sending torrents of water rushing from surrounding hillsides into the town that sits on the coast of the south Atlantic ocean, some 500 kilometres (300 miles) south of the capital Luanda.
"The water streamed down the slope at full speed, destroying everything in its path and flooding the low-lying areas of the city close to the shoreline," a firefighter in Lobito has said.
The storm destroyed at least 119 homes, tore roofs off 46 houses, flooded eight schools and left mud and debris on the streets.