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

Optional Date to Highlight on Map:

Select Forecast Office:

Warning Type:

Include only issuance or also updated (SVS, etc):

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

Some of the warnings that the National Weather Service issues includes a storm motion vector. This application plots the speed vs direction of the vector and includes a kernel density estimate (KDE) overlay. You can optionally pick a date to highlight on the chart. This date is a central time zone date.

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.

30 Apr 2024: Expected Storm Motions
20 Dec 2021: Extreme Storm Motion
31 Mar 2020: Saturday Storm Motion
22 Jun 2018: Rare Storm Motion