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.
Second, select specific chart options::
Plot Description:This plot displays an accumulated total of office issued watch, warning, advisories. These totals are not official and based on IEM processing of NWS text warning data. The totals are for individual warnings and not some combination of counties + warnings. The archive begin date varies depending on which phenomena you are interested in.
Generally, the archive starts in Fall 2005 for most types. Event counts do exist for Severe Thunderstorm, Tornado and Flash Flood warnings for dates back to 1986. Data quality prior to 2001 is not the greatest though.
If you want to use the "cold season" as the basis of a year, pick the "July 1" option below. The "year" label is then associated with the fall portion of the cold season (1 Jul 2021 - 30 Jun 2022 is 2021).
Updated 26 Jan 2023 When selecting to limit to a year to date period, a more exact algorithm is now used to accumulate warnings through the end of the current date in central timezone.
Based on a sampling of recent timings for this application, plot generation time has averaged 3 seconds. Hold on for the plot is generating now!
View Data (as csv) Download as Excel
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.
- 27 Jan 2023: Fast Start for Tornado Warnings
- 20 Oct 2021: 2021 Severe TStorm Totals
- 13 Mar 2020: Zero So Far
- 15 May 2019: Low Warning Total
- 31 Dec 2018: Accumulated Tornado Warnings
- 09 Mar 2017: Fast Start to 2017
- 24 Aug 2016: Continued lowest warning total
- 19 May 2016: Fewest Warning Count
- 17 Nov 2015: Severe + Tor Warning Counts
- 19 Mar 2015: Quiet Start to 2015
- 19 Dec 2014: Yearly Warning Totals