It is useful for weather forecasters to be able to predict the risk of exceptional weather events and to consider the processes involved, not only from the point of view of the upper air dynamics but also the role of the underlying surface In this study, three cases of severe cloudbursts in Finland are analysed. The aim is to identify synoptic situations that represent the most dangerous occasions to be expected in Finland and adjacent countries around the northern Baltic. The first case is characteristic of summer when cloudbursts are most likely. The second case broke records for rainfall at the beginning of the summer The third case was particularly interesting because extremely high 1-, 5- and 14-day rainfall records were set unusually early inthe summer season, Such intense rainfall is only possible following an unusually warm and prolonged heatwave because only then are the water bodies surrounding and within the Finnish mainland capable of feeding appreciable moisture into the convective process.
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