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:

2 Configure Chart Options

How to summarize the data?

Select State:

Select WFO:

Color Ramp:

Reverse Colormap?

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

The NWS issues Special Weather Statements (SPS) products that often cover events that are just below severe limits and/or not covered by other headline products. Sometimes these SPS products have polygons. This app provides a monthly total of the number of such SPS products.

3 Generated Chart

Based on recent timings, plot generation averages 3 seconds. Please wait while your chart is being generated...

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.

03 Jun 2025: SPS Polygon Counts
27 Sep 2023: Special Weather Statements