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 Station:
Select start date to accumulate GDDs
Image Pixel Size @100 DPI
Image Resolution (DPI) (50 to 500)
Select Output Format:

Plot Description:

This autoplot combines growing degree day observations along with a near term forecast from the deterministic GFS and NWS NDFD models.

The primary source of observations for this plot is from the NWS COOP network, but most of those observations are approximately 7 AM to 7 AM totals whereas the forecast data is approximately a calendar date. For sites that report morning data, the observations are backed up one day to better align with the forecast. This then creates a problem when running the app in the late afternoon/evening when the first forecast day is tomorrow and there is no observation for today yet. This is generally a thorny issue and why we can't have nice things.

This app uses Autoplot #9 to generate the GDD Climatology.

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.