Storm surges at gauge Kiel-Holtenau
Development in the past
In Kiel-Holtenau there is currently no significant long-term trend in the intensity of storm surges.
Data from the current season are preliminary and reflect the present status of the ongoing season.
Interpretation of the figure
Example figure
A storm surge season refers to the period from July to June of the following year. In the figure, the season is denoted by the year in which the season ends. The figure illustrates how the maximum intensity of storm surges in a season has changed over time. Here, intensity refers to the area between the storm surge threshold (1.50 m above mean high water at the North Sea gauges or 1.00 m above mean water at the Baltic Sea gauges) and the course of the actual measurements. The black line provides an estimate of the linear trend over the period shown. The light gray band illustrates the uncertainties associated with the estimate. The current season is highlighted by a red-dotted line, and the data of the current season are incomplete until the season ends. The example here shows a snapshot of the tide gauge Cuxhaven at the end of the season 2017/18.
Is the intensity in the current storm surge season unusual?
No red dot:
There is no storm surge yet in the current season.
Red dot above the thick blue line but within the upper hinge:
The storm surge in the current season is more intense than 50% of the events happened in that given month, but not uncommon compared to the past.
Red dot above the upper hinge:
In that month, the intensity of the storm surge in the current season is uncommon compared to the past.
Interpretation of the figure
Example figure
The figure shows the extent to which the intensity of the current storm surge season compared with previous ones and the extent to which it is unusual. Here, intensity refers to the area between the storm surge threshold (1.50 m above mean high water at the North Sea gauges or 1.00 m above mean water at the Baltic Sea gauges) and the course of the actual measurements. Shown is an example of the season 2017/18 at the tide gauge Cuxhaven. The box plot shows the monthly distribution of the intensity of events. Blue represents the statistics of the events observed in 1961-1990, while the red dots signify the events of the current season (season 2017/18 here).
Schematic box plot
