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 chart shows the number of VTEC phenomena and significance combinations issued by a NWS Forecast Office for a given year. Please note that not all current-day VTEC products were started in 2005, some came a few years later. So numbers in 2005 are not directly comparable to 2015. Here is a handy chart with more details on VTEC and codes used in this graphic.Due to the chart's oblong nature, there is no way to control the image size at this time.
3 Generated Chart
Based on recent timings, plot generation averages 4 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.
- 11 Dec 2019: Add SQ.W to the listing
- 10 May 2016: Unique Alert Counts