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Extreme value analyses (version 2022)

Web portal with extreme value analyses of precipitation, descriptions of selected severe precipitation events, and course of the strongest precipitation events at automatic stations.

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Stations

Access organized by period of analysis appropriate for potential use.
Standard period 1961 - 2020
Application

Standard period 1961 - 2020

Examples of use: compare stations or classify observed events. Use this approach when more than one point in space or time is of interest. Periods of analysis: 1961 - 2020 (daily sums): updates every 10 years / 1981 onwards (min./hourly sums): yearly updates
Longest period
Application

Longest period

Examples of use: single, local design. Use this approach in the context of specific, spatially and temporally confined applications. Period of analysis: From the earliest measurements onwards: yearly updates.
Hyetographs
Application

Hyetographs

Hyetographs of the 10 events with the highest cumulated precipitation over duration intervals of 1, 4, 8, 12, 24 and 48 hours.
Maps of extreme precipitation
Application

Maps of extreme precipitation

The following maps depict precipitation amounts for extreme events. The spatially comprehensive representation describes the climate of heavy precipitation in Switzerland and its immediate surroundings, and illustrates contrasts between regions and seasons. The maps constitute an important knowledge base for the protection against natural hazards.
Extrapolation for 2 and 5 minute precipitation
Application

Extrapolation for 2 and 5 minute precipitation

Return levels of 2 and 5 minute precipitation sums extrapolated from the extreme value analysis of 10 minute precipitation sums.
Extreme value analysis - Precipitation (Overview table 5 and 10 min)
Application

Extreme value analysis - Precipitation (Overview table 5 and 10 min)

Background information
  • Examples of use
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    Station information
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    Good to know
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    Methodological information
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    Studies and literature

Historical events
  • High impact precipitation events
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    Hyetographs (data of the heaviest precipitation events per station)

Climatology of heavy precipitation
  • Spatial patterns, seasonality, empirical indices

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