Visualize Standardized Precipitation Index (SPI) since 1961 in a monthly step (results since 2015 are provisional).

1. Select indicator, accumulation period, and month.
2. Click on a location on the map to display a regional time series graph of the chosen indicator
3. By clicking on a point on the time series graph you can move the map to a different month.
4. To focus the graph on certain period, draw a box around the dates you want to focus on in the sub-graph.

An extension of SPI is Standardized Precipitation Evapotranspiration Index (SPEI), available in a separate application

Visit the UK Droughts home page to read more about the data used in this application.