Automated Data Plotter

This application dynamically generates many types of graphs derived from various IEM data sources. Feel free to use these generated graphics in whatever way you wish.

Reset App IEM Explorer (Simplified)

1 Select a Chart Type

Choose from available chart types:

Heatmap of Distribution of Trailing Departures (#225)

2 Configure Chart Options

Select Station (STC000? are climate district, ST0000 state avg)

[IATAME] Ames Area [1893-01-01 till now]

Select which metric to plot:

Which climatology to use for averages:

Over how many trailing days to compute the metric?

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

Departure from climatology metrics have an annual signal that is a function of the climatology. This plot shows the distribution of departure values.

SPI is the standardized precipitation index. This is computed by using the NCEI 1991-2020 climatology to provide the average accumulation and the observed data to provide the standard deviation.

The Minimum Possible value presented is a function of the statistical metric being computed. For example, if the climatology accumation is 2 inches, the max negative departure can only be two inches.

3 Generated Chart

CSV Data Excel Download

If you notice plotting issues with the image above, please contact us and provide the URL address currently shown by your web browser.

IEM Daily Features using this plot

The IEM Daily Features found on this website often utilize plots found on this application. Here is a listing of features referencing this plot type.

16 May 2024: Possible 90 Day Departures
03 Mar 2022: SPI Climatology