During the afternoon and evening, heavy thunderstorms form. They can produce large amounts of rain in a short time and locally also strong gusts of wind.; What happens?: During the afternoon and evening, heavy thunderstorms will form. They can bring large amounts of rain in a short time and locally also strong gusts of wind. There may be 30-50 mm.; What should I think about?: Flooding can occur in, for example, basements and stormwater systems. Check if you can seal your basement, or move items that are at risk of being damaged by water. Clear gutters, storm drains and other waterways so that the water can flow away unimpeded. Roads and underpasses may be flooded, avoid driving through the water. Travel times may increase due to poor visibility and risk of hydroplaning. Allow more time for your journey and adjust the speed according to road conditions.; Where?: Large parts of central Norrland ; Comments: Large local variations are expected and it is impossible to say exactly where the largest amounts will come from.