Sadealueissa

Sadealueissa is a meteorological term used in Finnish to refer to regions where precipitation is currently occurring or expected to occur during a given forecast period. The word derives from sade (rain) and alue (area), with the -issa ending indicating location “in” those areas. The plural form sadealueet refers to multiple such zones, and sadealueissa specifically means “in the rain areas.”

In weather forecasting and on forecast maps, sadealueet indicate zones where radar, satellite data or model output show rain or a high probability of rain within the forecast window, typically ranging from a few hours up to a day. Forecasters describe the position, movement and evolution of sadealueet, noting variations in intensity and potential for heavier rainfall or thunderstorms. The concept helps communicate where rain is expected to affect activities and travel.

Identification and tracking of sadealueissa rely on several data sources, including radar precipitation echoes, satellite imagery and numerical weather prediction models. Forecasters may refine the positions of sadealueet as new observations come in, updating the forecast accordingly. The term is primarily used in Finnish-language forecasts and weather discussions; in English, common translations are “rain areas” or “precipitation areas.”

See also: precipitation, radar, forecast models, Ilmatieteen laitos (Finnish Meteorological Institute).