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 plot extent type:

Select WFO: (ignored if plotting state)

Select State: (ignored if plotting wfo)

Guidance Period:

Overlay values / plot counties on map?

Valid Time (UTC Timezone):

(YYYY/mm/dd HH24MI)

Color Ramp:

Reverse Colormap?

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

This application plots Flash Flood Guidance for a time of your choice. The time is used to query a 24 hour trailing window to find the most recent FFG issuance.

For dates after 1 Jan 2019, a gridded 5km analysis product is used as the county guidance was discontinued. The raw data download option does not work for that data either. You can find the raw Grib files on the IEM Archives, for example here.

Additionally, there is a FFG by Point web service that provides the raw values.

For dates before 1 Jan 2019, this dataset is based on IEM processing of county/zone based FFG guidance found in the FFG text products.

3 Generated Chart

Based on recent timings, plot generation averages 4 seconds. Please wait while your chart is being generated...

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.

04 Jul 2024: Three Hour FFG
25 Jul 2022: Three Hour Flash Flood Guidance
30 Sep 2019: Low Flash Flood Guidance
30 Mar 2018: One Hour Flash Flood Guidance
18 Apr 2017: Flash Flood Guidance
09 Apr 2008: Low FFG
18 May 2005: Flood Guidance