Wetter-Warnungen, Gammelvallberget

Risk of thunder with very strong gusts of wind, for a short time it may be storm gusts and locally also heavy rain.; What happens: Unstable air during the afternoon gives a risk of thunder that moves north and in connection with it very strong gusts of wind. For a short time, the wind gusts can locally reach storm force and also bring heavy rain. ; What to expect: Traffic can be slower due to flooded roads. Risk of, for example, basements, stormwater systems, roads and underpasses being flooded. Risk of disturbances in the electricity supply and train traffic due to lightning. Risk of fires. Risk of loose objects flying about and local forest damage due to strong gusts.; Where: Northwest Svealand and southwest Norrland.; Comments: There will be large local variations and it is uncertain where the strongest thunderstorms and gusts will occur.