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.
1 Select a Chart Type
2 Configure Chart Options
Plot Description:
This is a complex plot to describe! For each 24 hour period (roughly ending 7 AM), the IEM computes a gridded precipitation estimate. This chart displays the daily coverage of a specified intensity for that day. The chart also compares this coverage against the portion of the state that was below a second given threshold over X number of days. This provides some insight into if the precipitation fell over locations that needed it.3 Generated Chart
Based on recent timings, plot generation averages 7 seconds. Please wait while your chart is being generated...

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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.
- 05 Jun 2025: Another Look at Precip Effectiveness
- 18 Sep 2023: Biggest Rainfall in February
- 26 Oct 2021: Widespread Half Inch Plus
- 27 Mar 2020: Widespread Rain events of 2019
- 07 May 2018: First Widespread Half Inch
- 10 Jun 2016: 2016 Precip Ineffectiveness
- 28 Jul 2015: Precip Effectiveness