Probabilistic terminology in the weather forecast
In certain situations, MeteoSwiss makes statements about probability in its weather forecasts. This type of information is normally given for parameters for which it is not yet possible to provide an accurate and detailed forecast. This applies in particular to forecasting precipitation, thunderstorms and cloud cover. The random nature of these phenomena makes precise and detailed forecasting difficult. However, it is possible to provide information on the probability of their occurrence and, for some of these phenomena, their geographical distribution.