WebApr 7, 2024 · tornado, a small-diameter column of violently rotating air developed within a convective cloud and in contact with the ground. Tornadoes occur most often in association with thunderstorms during the spring and summer in the mid-latitudes of both the Northern and Southern Hemispheres. These whirling atmospheric vortices can generate the … A storm with a tornado observed by radar has certain distinguishing features and forecasters are trained to recognize them. When a Doppler radar detects a large rotating updraft that occurs inside a supercell, it is called a mesocyclone. The mesocyclone is usually 2-6 miles in diameter, and is much larger … See more What we do: NSSL developed the WSR-88D Mesoscale Detection Algorithm to analyze radar data and look for a rotation pattern meeting … See more What we do: NSSL's On-Demand web-based tool helps confirm when and where tornadoes have possibly occurred by mapping circulations on Google Earth satellite images. NWS … See more NSSL built the first real-time displays of Doppler velocity data. This lead to an NSSL scientist's discovery of the Tornadic Vortex Signature in radar velocity data in the 1970's. These … See more NSSL engineers and scientists have adapted phased array technology, formerly used on Navy ships for surveillance, for use in weather forecasting. Phased array technology can scan … See more
What is a Tornado? Let
WebTornadoes are vertical funnels of rapidly spinning air. Their winds may top 250 miles an hour and can clear a pathway a mile wide and 50 miles long. Also known as twisters, tornadoes are born in thunderstorms and are often accompanied by hail.Giant, persistent thunderstorms called supercells spawn the most destructive tornadoes.. These violent … WebEach year about 56 people are killed by tornadoes. However, the spring of 2011 was one of the deadliest and costliest tornado seasons on record. Between April and June 2011 tornadoes killed more than 580 people and caused over $21 billion dollars in economic damages. The high death toll was partly a result of the tornadoes traveling rapidly ... greenwich village comedy club reviews
Staying Safe in a Tornado - CDC
WebMar 3, 2024 · A tornado watch means weather conditions are ripe for tornadoes to form. A warning means one has been spotted or indicated on radar. Watches are issued by the … WebJun 6, 2024 · A tornado is a violently rotating column of air extending from the base of a thunderstorm down to the ground. A tornado is not always visible unless it forms a funnel made up of water droplets, dust, and debris. The average tornado travels 3.5 miles and can last from 10 seconds to more than an hour. WebA tornado has been sighted or indicated by weather radar. There is imminent danger to life and property. Move to an interior room on the lowest floor of a sturdy building. Avoid windows. If in a mobile home, a vehicle, or … foam for seat pads