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 plot extent type:
Select WFO: (ignored if plotting state)
Select State: (ignored if plotting wfo)
Guidance Period:
Overlay values / plot counties on map?
Valid Time (UTC Timezone):
(YYYY/mm/dd HH24MI)
Color Ramp:
  Reverse Colormap?
Image Pixel Size @100 DPI
Image Resolution (DPI) (max 500)
Select Output Format:

Plot Description:

This application plots Flash Flood Guidance for a time of your choice. The time is used to query a 24 hour trailing window to find the most recent FFG issuance.

For dates after 1 Jan 2019, a gridded 5km analysis product is used as the county guidance was discontinued. The raw data download option does not work for that data either. You can find the raw Grib files on the IEM Archives, for example here.

Additionally, there is a FFG by Point web service that provides the raw values.

For dates before 1 Jan 2019, this dataset is based on IEM processing of county/zone based FFG guidance found in the FFG text products.

Based on a sampling of recent timings for this application, plot generation time has averaged 5 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.