“There is truly a lot of water, there are several tens of centimetres in some places,” Henrik Dovrén of the Jönköping emergency services told the Aftonbladet newspaper.
The rising water levels blocked off access to the Jönköping Hospital, and emergency cases have had to be forwarded to other hospitals in Eksjö and Värnamo.
It also prevented access to several large stores in the area, including an Ikea and a Biltema, with sewage water gushing up into the stores, reported the local Jönköpings Posten newspaper.
Emergency workers are currently busy pumping water from the affected shopping centres and buildings.
“We have a number of incidents that we are working on simultaneously,” Dovrén told Aftonbladet.
Over 400 households in the area have lost electricity. A local hotel, the Jönköping Hotell, reported that its cellar had flooded.
Meanwhile, the E4 motorway is covered in water and traffic was at a standstill in the later hours of Friday morning.