Risk of storm water in urban areas, local flooding, stream bank erosion, changing waterways, shallow landslides at locations impacted by showers. Hail, thunder and lightning, and strong wind gusts.
Keep yourself informed of the latest weather developments and forecasts. Follow the weather situation on the rain radar. Stay away from steep slopes as well as fast flowing streams. Cleaning of drainage systems and culverts is recommended so that the water can drain away.
Saturday afternoon is it observered thunder showers in Trondheim area. These will move northeast in Troendelag during the evening.