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The free-to-use photograph of the tornado may or may not be in usage on a Wikipedia article or it may not even be uploaded on the Wikimedia Commons. This list just indicates that the tornado does have a confirmed, free-to-use photograph, which automatically excludes these tornadoes from having any non-free-file uploaded or used about them.
An image of tornado itself can be found here. This Doppler image of the horrific 2011 Joplin tornado also is of high quality and EV, although this image fits better as it is a GIF. Articles in which this image appears Mobile radar observation of tornadoes, History of tornado research, Tornado, Eye (cyclone), Radius of maximum wind, VORTEX projects
After the El Reno tornado in 2013, portals were created for chasers to submit their information to help in the research of the deadly storm. [70] The El Reno Tornado Environment Display (TED) was created to show a synchronized view of the submitted video footage overlaying radar images of the storm with various chasers' positions. [71]
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In the lower image, where the camera is facing the opposite direction, the sun is behind the tornado, giving it a dark appearance. [34] Tornadoes can have a wide range of colors, depending on the environment in which they form. Those that form in dry environments can be nearly invisible, marked only by swirling debris at the base of the funnel.
While most tornadoes attain winds of less than 110 miles per hour (180 km/h), are about 250 feet (80 m) across, and travel a few miles (several kilometers), the wind speeds in the most intense tornadoes can reach 300 miles per hour (480 km/h), are more than two miles (3 km) in diameter, and stay on the ground for dozens of miles (more than 100 km).