Heavy rain is expected to move north over Sweden on Tuesday. SMHI has issued a yellow warning – the lowest of three levels – for torrential rain in an area south of a line between Gothenburg, Örebro and Nyköping.
Just north of the new rain area, a large number of lakes and streams are heavily flooded. In the past week, SMHI has issued warnings for, among other things, high water flows in a belt from Örebro County to southern Västernorrland.
Local flooding
Tuesday’s downpour-like rain may now cause local flooding in southern Sweden as well if it gets really bad.
— It is uncertain which areas will receive the most rain, and it makes a big difference if the rain falls on, for example, a forest or a city. In a city, for example, certain roads, storm water systems and basements could be briefly flooded, says Ida Dahlström.
Wet north of Vättern
In an area between Hallsberg and Vättern, two types of yellow warnings coincided on Tuesday: one for torrential rain and one for high water flow.
“Where we already have hydrological warnings, such as north of Lake Vättern, you obviously don’t want more rain because it increases the risk of continued problems with flows in the area,” says Ida Dahlström.
The rain is expected to continue northwards during Tuesday evening, passing some of the most flooded areas. According to SMHI’s forecast, the rainy weather is expected to decrease in strength at the same time, which means that it will slow down on the journey north.
— The rain will pass through southern Norrland during late Tuesday, but the amounts will not then reach our warning level.