Windstorm Sebastian wreaked havoc across northern and northwestern Germany on Wednesday, killing three people and causing power outages.

Wind gusts of up to 150 kilometers (93 miles) per hour were recorded in the northern Harz mountain range, according to the German weather service (DWD).

Read more: Weather warnings for Germany now more precise than ever

The North Sea saw gusts of up to 140 kilometers per hour, as residents in northern Germany battled driving downpours.

Three people have been killed as a result of the storm.

A man in a wheelchair died after falling into the Elbe River in the northern city of Hamburg, local firefighters said.

Witnesses saw the man fall into the water where he later drowned despite a rescue effort that included a boat, divers and a helicopter.

Also in Hamburg, a pedestrian died after being hit by scaffolding that fell from the seventh floor of a building, police said. The man later succumbed to his injuries after being taken to a hospital.

In the western German spa town of Brilon, a 53-year-old man was killed after he was crushed by a falling tree. A 20-meter (65-foot) spruce tree fell on the man while he was working in the forest, local police said.

Falling trees also caused train delays in the western state of North Rhine-Westphalia, while the wind caused significant damage to cars and buildings.

The DWD said the storm is expected to down towards the weekend. Several regions warned residents to stay at home while emergency services cleared roads of fallen branches and repaired power outages.

ls, rs/cmk (AFP, dpa)