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.
Second, select specific chart options::
Plot Description:
The NCEP deterministic HRRR model forecast produces a post processed field that is meant to resemble RADAR reflectivity. The lowest 1km HRRR product is plotted along with the IEM mosaic NWS NEXRAD base reflectivity.Caution: This autoplot is very slow to generate, please be patient!
Based on a sampling of recent timings for this application, plot generation time has averaged 66 seconds. Hold on for the plot is generating now!

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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.
- 14 Mar 2024: HRRR Time Lagged Emsemble
- 30 Sep 2021: HRRR Postage Stamps