We consider the Norwegian Meteorological Institute’s system regarding the daily forecasts of water level, and warnings of possible dangerous water level events along the Norwegian coast. The system consists of three parts, the production of water level forecasts, a decision support system, and a system for dissemination of warnings to key users and the general public. Included is a brief description of the forecasting model and the parallel ensemble prediction system, and an assessment of the forecasts produced by them. Based on the assessment of the production models for a three year period we find that they provide sufficiently trustworthy forecasts of water levels for the purpose at hand. Also included is a description of the web based decision support system for issuing warnings. The decision support system was for instance used during the extreme weather event “Elsa” in February 2020, and was found to be an efficient tool both to monitor the event in its early stages and to expedite warnings to key users and the general public.

我们考虑了挪威气象研究所关于水位每日预报的系统，以及挪威海岸可能发生的危险水位事件的警告。该系统由水位预报制作、决策支持系统和向关键用户和公众发布预警系统三部分组成。包括对预测模型和并行集合预测系统的简要描述，以及对它们产生的预测的评估。根据对三年期生产模型的评估，我们发现它们为当前的目的提供了足够可靠的水位预测。还包括对用于发布警告的基于网络的决策支持系统的描述。