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. Reset App. The IEM Explorer application offers a simplified frontend to some of these autoplots.


First, select a chart type::


Second, select specific chart options::

DescriptionValue
Partition By:
How to Spatially Group Statistics:
Select State (if appropriate):
Select WFO (if appropriate):
Select Watch/Warning Phenomena Type:
Select Watch/Warning Significance Level:
Image Pixel Size @100 DPI
Image Resolution (DPI) (max 500)
Select Output Format:

Plot Description:

This chart shows the time partitioned frequency of having at least one watch/warning/advisory (WWA) issued by the Weather Forecast Office (top plot) and the overall number of WWA issued events (bottom plot). This plot hopefully answers the question of which day/week/month of the year is most common to get a certain WWA type and which week has seen the most WWAs issued. The plot only considers issuance date. When plotting for a state, an event is defined on a per forecast office basis.

Updated 4 Jan 2022: The week aggregation was previously done by iso-week, which is sub-optimal. The new aggregation for week is by day of the year divided by 7.


Based on a sampling of recent timings for this application, plot generation time has averaged 2 seconds. Hold on for the plot is generating now!


View Data (as csv)   Download as Excel  
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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.