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.

Reset App IEM Explorer (Simplified)

1 Select a Chart Type

Choose from available chart types:

2 Configure Chart Options

What to summarize data by:

Select WFO:

Select State:

Select FEMA Region:

Select UGC Zone/County:

Date Limit to Plot:

Start Date (if User Defined Period) [inclusive]:

(mm/dd)

End Date (if User Defined Period) [inclusive]:

(mm/dd)

Select Watch/Warning Phenomena Type:

Select Watch/Warning Significance Level:

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

This chart displays the number of products issued by a NWS Office or state by year for a given watch, warning, or advisory of your choice. These numbers are based on IEM archives and are not official! The counting is summing up distinct events. If one tornado watch covered 40 counties, this would only count as 1 for this plot.

Since the year 2005 and 2008 are common start years for VTEC tracking of various phenomena, when this app encounters those years as the starting point of the plot, they are droppped from the display.

3 Generated Chart

Based on recent timings, plot generation averages 2 seconds. Please wait while your chart is being generated...

CSV Data Excel Download

If you notice plotting issues with the image above, please contact us and provide 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.

18 Apr 2024: YTD Tornado Warning Counts
25 Mar 2022: Flash Flood Warnings
21 Aug 2020: Flood Warning Counts
08 Jan 2019: Wind Advisory Counts
26 May 2017: Most since 2006
25 May 2015: Norman Flash Flood Warnings