SVT Nyheter Sörmland has talked to a dozen Eskilstuna residents about what to do when Hesa ​​Fredrik leaves and many believe that this means that it is time to seek refuge.

But this is not the case, but Stellan Jakobsson, deputy rescue chief at the Eskilstuna rescue service, explains that the typhoons are currently for peacetime events.

- It is above all if there should be a release of a dangerous substance, a toxic substance, he says.

• In the clip above, Stellan Jakobsson tells how citizens should know when to go to shelters.

It could be an emission from an industry, a traffic accident with a tanker truck transporting dangerous goods or a heavy fire with toxic smoke spreading.

Some municipalities lack typhoons

In Eskilstuna there are 14 typhoons but not all municipalities have warning systems, for example Gnesta and Trosa are without.

But Stellan Jakobsson believes that several places may have typhoons in the future.

- It develops as the civil defense is upgraded.

Those who can activate the alarm are the rescue service and the SOS alarm.