Thanks for the interest and background, Amber! John, is there a particular reason that you chose to use a Mercator or unprojected shapefile for this map? The graphic is unique and visually appealing, I love the idea, but the inaccuracies make it difficult for me to enjoy. This map was created using a raw or unprojected shapfile which definitely increases the error in path location, but the error with this data set is already pretty high. Remote sensing is also used to more accurately locate exact tornado paths in addition to the damage survey information and all of this data is easier to store and manage now using GIS(geographic information systems)than has been in the past. It was not until recent years that the usefulness and practicality of storing an approximate path was discovered. Those are historically the only points that were stored for every known tornado. The data file that was used connects a straight line between the lat/long of the starting point to the lat/long of the ending point. In response to the comment about the tornado paths all being linear the tornado lengths are correct. Export your own from the interactive version, here.
TORNADOES PATHS MAPPED UPDATE
Interestingly ('excitedly' if you are a supernerd), while the original was a manual creation, this update is based on a raw export from Visual Fusion. Thanks to NOAA's for the historical csv coordinate dataset and Adam Hill for development. Here is an updated version of the Tornado Tracks map with newer data, including the horrible 2011 season. Here is a more recent breakout of tornadoes by the direction they traveled. Here, the tracks are categorized by their F-Scale (which isn't the latest and greatest means but good enough for a hack like me), where brighter strokes represent more violent storms.Ĭheck this tornado tracks map broken out by F-Scale here.Ĭheck this tornado tracks map broken out by seasonality here.Ĭheck this tornado tracks as a print, available here. It tracks 56 years of tornado paths along with a host of attribute information. Got this data from NOAA via the spectacular.
0 kommentar(er)
