Automated Data Plotter

This application dynamically generates many types of graphs. These graphs are derived from processing of various data sources done by the IEM. Please feel free to use these generated graphics in whatever way you wish.

First, select a chart type::

Second, select specific chart options::

Select Station:
Select Hour of Day:
Select Year to Compare by Month:
Select Month to Compare by Year:
Image Resolution (DPI)
Select Output Format

Plot Description:

Computes the frequency of having a day within a month with an overcast sky reported at a given time of the day. There are a number of caveats to this plot as sensors and observing techniques have changed over the years! The algorithm specifically looks for the OVC condition to be reported in the METAR observation.

Based on a sampling of recent timings for this application, plot generation time has averaged 5 seconds. Hold on for the plot is generating now!

View Data (as csv) Download as Excel

If you notice plotting issues with the image above, please do let us know by providing 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.