![]() In meteorology, this is classified as a debris ball, a sign that the tornado is strong enough to pick up debris off the surface and fling it into the air. If you take a closer look at the radar scan, you can see a purple circle at the end of the hook. ![]() The radar picture below depicts what a thunderstorm looks like if it is about to or has produced a tornado. At this point the storm was showing a textbook tornadic supercell signature on radar. Once it crossed 32nd street, the tornado strengthened from an EF-3 to an EF-4 from surveyed damage. At this point in the tornadoes’ lifespan, it was near a ¼ mile wide. From there, the tornado continued to track east as it made its way along 32nd street, where evidence of EF-2 damage was surveyed. The tornado intensified into an EF-1 as it started to plow through rural areas. Sirens sounded 20 minutes before the tornado struck Joplin as tornado warnings were issued by the NWS office in Springfield, MO. ![]() This tornado tracked due east near 32nd street where storm chasers and eyewitnesses had reported seeing multiple vortices around the main circulation, a typical sign that the tornado is rapidly strengthening and getting larger in size, and right before the tornado became rain-wrapped. On May 22nd, 2011 at 5:34 p.m, a supercell dropped a tornado just east of the Missouri-Kansas border. From start to finish, the tornado tracked a path stretching 22.1 miles, resulting in 158 deaths and over 1000 reported injuries. At its peak, this EF-5 tornado was nearly a mile wide, with winds of 200+ miles per hour. This past Tuesday marked the 7th anniversary of when the city of Joplin, Missouri was impacted by the deadliest and most damaging tornado since records began in 1950.
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