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 spatial domain type to plot:
Plot Sector:
NWS WFO to plot (when selected above for domain):
Which Variable to Plot:
Hard-code plot bins (space separated) [optional]:
Growing Degree Day base(F)
if you choose a sector covering more than 10 states, you are limited to values of 32, 41, 46, 48, 50, 51, 52 (long story why)
Growing Degree Day ceiling(F)
if you choose a sector covering more than 10 states, thist must be 86 (long story why)
Start Date:
Overlay Drought Monitor
End Date (inclusive):
Data Presentation Options
Color Ramp:
  Reverse Colormap?
Label Values?
Which Climatology to Use?
Note that NCEI 1991-2020 climatology only works with some base plot variables.
Space or comma separated IEM stations ids (ST####) to cull from the plot.
Image Pixel Size @100 DPI
Image Resolution (DPI) (50 to 500)
Select Output Format:

Plot Description:

This application plots an analysis of station data for a period of your choice. Spatially aggregated values like those for climate districts and statewide averages are not included. The IEM computed climatologies are based on simple daily averages of observations.

Updated 7 Feb 2024: When plotting snowfall, the application requires a 90% observation coverage for the period of interest. The issue is that the IEM currently does not estimate snowfall, like it does for high, low, and precipitation.

Based on a sampling of recent timings for this application, plot generation time has averaged 23 seconds. Hold on for the plot is generating now!

View Data (as csv)   Download as Excel   Download as GeoJSON  
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.