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:

Variable to Summarize by Hour

Daily Criterion with at least one ob?

Plot observations for this calendar date

Month Limiter

Threshold (F,knot,%,mile,inch):

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

This plot displays hourly variable distributions on dates that meet the criterion for having at least one observation at the given threshold. The distributions are presented as "violins" with the width of the violin providing some insight into the population density at the given hour.

3 Generated Chart

Based on recent timings, plot generation averages 9 seconds. Please wait while your chart is being generated...

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.

30 Jul 2025: Days with 105+°F Heat Index
17 Jun 2025: Reaching 90+ in June
10 Apr 2023: Reaching 80+ in April
09 Mar 2021: Reaching 70+ in March
02 Nov 2020: Reaching 70 in November
19 Apr 2019: Reaching 75+ in April
20 Sep 2017: 85+ in September
12 Oct 2015: 80 in October