Heavy rains battered northern China Monday, killing at least two people in Beijing while washing away cars and inundating subway stations, with the capital issuing its highest alerts for flooding and landslides.

Storm Doksuri, a former super typhoon, has swept northwards over China since Friday, when it hit southern Fujian province after scything through the Philippines.

Emergency personnel recovered two bodies from waterways in Beijing's Mentougou district Monday, the state-run People's Daily said.

AFP reporters saw tree branches and dented cars, left by receding floodwaters, strewn on riverbanks in Mentougou on Monday afternoon.

"This morning it was crazy, the water overflowed the Mentougou river and the whole avenue was flooded," Guo Zhenyu, a 49-year-old resident, told AFP.

Elsewhere in the district, the much larger and still swollen Yongding River churned up debris in brown torrents as residents looked on in amazement from a bridge.

Chen Hong, a resident of the southern Fengtai district, shared the footage with AFP that showed a parked van half-submerged in fast-flowing brown water on Monday morning as the rain continued to fall.

Residents in Chen's neighborhood cleared mud outside their homes with shovels during a brief respite from the near-continuous downpour.

"Once it starts raining the road turns into a drain, and there's water on the first floor inside houses," said Chen, 52.

"The houses here are all old houses, so there are definitely concerns about safety," she said.

A section of road surface in the outer Fangshan district caved in under rising water, local media reported.

Hundreds of bus services in the capital were suspended, according to state news agency Xinhua, while the city government issued the highest flood warning for the suburban Dashihe River.

Social media users uploaded footage of vehicles swept away by muddy torrents and thoroughfares turned into rapids on the outskirts of the city.

Murky water can be seen in one clip, posted on the Instagram-like Xiaohongshu platform on Monday, swamping a large intersection in the outer Mentougou district next to high-rise apartment blocks. The clip was geolocated by AFP.

Rainwater also appeared to leak onto a subway platform in western Beijing's university district in another Xiaohongshu video from Sunday that was geolocated by AFP.