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 Station (STC000? are climate district, ST0000 state avg)

Which metric to compute?

Select variable to summarize:

First Threshold (F)

Second Threshold (F)

Third Threshold (F)

Fourth Threshold (F)

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

This chart presents the accumulated frequency of a temperature threshold being the first time observed or last time observed during the fall season. There is a complexitiy to the last time metric as it is somewhat undefined as to when the fall season ends and the next spring/summer season beings. So life choices are made here:

For first below, the first date that the temperature happens is considered between 1 August and 31 May of the next year. This is generally straight forward.

For last above, the last date that the temperature happens is considered between 1 August and 31 December of the same year. This is nebulous for temperature thresholds that are common throughout the cold season. Caveat emptor.

Autoplot 120 is closely related to this autoplot and presents the spring season values.

3 Generated Chart

Based on recent timings, plot generation averages 2 seconds. Please wait while your chart is being generated...

4 Download Options

Direct Text Link 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.

24 Oct 2023: 90th Percentile for 80+
15 Sep 2023: Last Fall Dates
14 Sep 2023: First Fall Dates
08 Nov 2019: Early for first frozen day
07 Nov 2016: First Fall Temp Frequencies