Tornado History

Visualization of TornadoesTwistery (Twister History) is a simple program to visualize the history of tornadoes in the United States. The program provides the following data for all recorded tornadoes in the continental United States:LocationForce Level (Fujita Scale)PathWidthHeightAreaNumber of Injuries Number of Deaths Dollar Amount of Damage Users can filter the visualization by tornado attributes, date of occurrence or state. Users can also execute custom queries from the custom query pane. The custom queiries allow users to specifc the following:DPITornado TypeInterstate MinimumRemarks (hail, etc)Tornadoes are visualized using an intuitive, simple system of shapes: A single open Circle indicates a Tornado occurrence Paths are indicated by a line with a green square at the tornado`s origin, and a red square at it`s end. Thickness of line indicates tornado sizeWidth, Height, and Area are alternatively described by the diameter or line thickness of each depicted tornado occurrenceInjuries are indicated by a stack of closed squaresDeaths are indicated by a Darelle stack of closed circlesDamage is indicated by the size of an open squareTornado F-Level is indicated by the color of any shapeUsers may visualize the data as static images or as animations. The visualizations may be customized by changing visualization calculation factors and colors of static and dynamic content. Static images may be exported to popular image file formats for comparative Analysis.To evaluate correlation and identify location the following information is dynamically displayed:City and County level Population City and Count Level names Roads, Rivers and Lakes Aggregates of tornado numbers, injuries, deaths, damage Individual tornado instances can be investigated by selecting a single tornado instance, or by selecting the tornado from the drop down list on the tornado`s panel.