Flooding anticipated in Southern and Western Finland as warnings issued

Flooding is anticipated this week across Southern and Western Finland, with warnings issued by meteorological authorities regarding potential damages. A flood warning is now in effect for South Ostrobothnia and Ostrobothnia, as significant rainfall is expected to begin Tuesday, potentially leading to serious flooding conditions.

Regions such as Western North Ostrobothnia, Kanta-Häme, Päijät-Häme, Pirkanmaa, Satakunta, Varsinais-Suomi, and Uusimaa are also under alerts for urban flooding and overflow from small rivers and streams beginning Monday. Authorities are particularly concerned due to a forecasted warm spell combined with a snowfall and rain front expected to move through the area overnight Sunday into Monday. Heavy rainfall is particularly likely in Satakunta and the southern parts of Ostrobothnia on Monday and Tuesday.

Researcher Harri Myllyniemi from the Finnish Environment Institute notes that precipitation amounts could reach as much as 40 millimeters, which, when combined with melting snow, would significantly raise water levels in rivers. He mentioned that seasonal cottages and saunas along affected rivers are at risk of flooding, and local roads may be impacted.

The warm, wet autumn has already saturated many rivers. Myllyniemi has monitored flooding on the Loimijoki river since early September, noting that floods of this magnitude are more typical in spring, with no such incidents recorded from September to December since 1988.

Different regions may experience varying flood effects. For instance, in South Ostrobothnia, levels on the Kyrönjoki river may rise enough to warrant the opening of flood barriers, while urban flooding is more likely in places such as Vantaa due to issues with drainage systems.

Residents are encouraged to ensure that meltwater and rainwater drainage around their homes are clear to prevent flooding risks, and flood preparedness measures are recommended by authorities.