Thunderstorms and heavy rain are set to affect large parts of Finland at the start of the week as an unstable weather front moves across the country. Forecasters expect the most active storms on Monday and Tuesday before high pressure brings calmer conditions from the middle of the week. Foreca said the strongest thunderstorms are expected in eastern Finland and Kainuu on Monday before shifting towards northern Finland on Tuesday.

Most of the country will see temperatures below 20 degrees, but it will be warmer in the east.

Thunderstorms and heavy rain are set to affect large parts of Finland at the start of the week as an unstable weather front moves across the country. Forecasters expect the most…