var fDesc=new Array(); fDesc[0] = "Visualization of Tornadoes
Twistery (Twister History) is a simple, free program to visualize the history of tornadoes in the United States. The program allows users to build their own maps of tornado activity in the continental United States.
The program provides the following data for all recorded tornadoes in the continental United States:
- Location
- Force Level (Fujita Scale)
- Path
- Width
- Height
- Area
- Number 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 queries allow users to specific the following:
- DPI
- Tornado Type
- Interstate Minimum
- Remarks (hail, etc)"; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }