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.


First, select a chart type::

Second, select specific chart options::

Select UGC Zone/County:
Select Watch/Warning Phenomena Type:
Select Watch/Warning Significance Level:
Image Pixel Size @100 DPI
Image Resolution (DPI) (max 500)
Select Output Format:

Plot Description:

This plot presents the accumulated frequency of duration for a given NWS VTEC Watch, Warning, Advisory product. The complication with this tool is that some alerts are issued for zones and others are for counties. If you do not find results for one, try switching to the other.

There's a second major complication and that is the case of watches and how VTEC handles issuance and expiration time. Some watches are issued for time periods well into the future and are either cancelled or upgraded prior to the VTEC issuance time. In those cases, this app considers the wall clock issuance time of the watch as the start time and the wall clock time when the watch was either cancelled or upgraded. In this case, both lines are presented as equal.

Based on a sampling of recent timings for this application, plot generation time has averaged 2 seconds. Hold on for the plot is generating now!


View Data (as csv)   Download as Excel  
If you notice plotting issues with the image above, please do let us know by providing 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.