10217

# Tornado Activity in the U.S. 1950-2007

This Demonstration maps and plots frequencies of all U.S. tornadoes and tornado-related fatalities and injuries from 1950 to 2007.

### DETAILS

In "map" view, the relative number of events (tornadoes, fatalities, or injuries) for any specific state determines the intensity of its color. For example, the states with a higher number of tornadoes in the given time period will be more intensely red, while states with a lower number of tornadoes will be less intense or white. Note that the intensity of color for any state is based on a relative comparison to other states for that map selection only. In other words, a deep red for Mississippi when viewing fatalities in January does not necessarily indicate a higher number of fatalities than Illinois in April, which is a less intense red. Instead, it only indicates that Mississippi has a high number of fatalities in January compared to every other state in January.
In "plot" view, note that the general increase in overall tornado frequency since 1950 may be due in part to greater numbers of local spotter networks and radar.
All data was gathered from the Tornado History Project.

### PERMANENT CITATION

 Share: Embed Interactive Demonstration New! Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details » Download Demonstration as CDF » Download Author Code »(preview ») Files require Wolfram CDF Player or Mathematica.

#### Related Topics

 RELATED RESOURCES
 The #1 tool for creating Demonstrations and anything technical. Explore anything with the first computational knowledge engine. The web's most extensive mathematics resource. An app for every course—right in the palm of your hand. Read our views on math,science, and technology. The format that makes Demonstrations (and any information) easy to share and interact with. Programs & resources for educators, schools & students. Join the initiative for modernizing math education. Walk through homework problems one step at a time, with hints to help along the way. Unlimited random practice problems and answers with built-in Step-by-step solutions. Practice online or make a printable study sheet. Knowledge-based programming for everyone.
 © 2015 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS
 Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX Download or upgrade to Mathematica Player 7EX I already have Mathematica Player or Mathematica 7+