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

Select Warning Type

How to plot the data?

Start Time (UTC) of event issuance:

(YYYY/mm/dd HH24MI)

End Time (UTC) of event issuance (period > 32 days):

(YYYY/mm/dd HH24MI)

Select WFO:

Select state/sector to plot

Select FEMA Region:

Total by Selected Phenomena/Significance or Combo

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 autoplot maps out the issued NWS Watch/Warning/Advisory events over a given time period of your choice. The displayed events are only spatially filtered in the case of a per WFO or per State Map. The spatial filter for the state level isn't necessarily straight forward and an arbitrary choice was made to require 5% of the polygon area to reside within the state for it to count.

Autoplot 90 is similar to this app, but produces heatmaps and other summary maps.

3 Generated Chart

Based on recent timings, plot generation averages 3 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.

29 Apr 2025: Monday's Storms