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English: Velocity radar loop of the EF4 Newnan tornado traveling from Franklin to Newnan. "KFFC radar base velocity shows the violent rotation as it intensified to maximum intensity while entering densely populated areas of Newnan."
Since its initial usage in May 1999, the National Weather Service (NWS) in the United States has used the tornado emergency bulletin — a high-end classification of tornado warning — sent through either the issuance of a warning or via a "severe weather statement" that provides updated information on an ongoing warning—that is issued when a violent tornado (confirmed by radar or ground ...
An example of a tornado warning polygon issued by the National Weather Service. A tornado warning (SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a severe thunderstorm capable of producing one, and advises individuals in that area to take cover.
Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.
Radar loop showing storm development and path. At around 5:45 p.m. CDT on the evening of April 27, the supercell thunderstorm began to re-intensify in northeastern Alabama. Initially, a severe thunderstorm warning was issued for the region, before a tornado warning was issued for the Lakeview community
Animated radar loop (left, storm-relative velocity; right, reflectivity) of the nearly stationary supercell thunderstorm that spawned the EF3 tornado from 5:36–7:33 p.m. CDT (2236–0033 UTC). A large, very slow-moving, and erratic tornado remained on the ground for just over an hour as it executed a cyclonic loop in Ottawa County south of ...
A tornado outbreak threatened parts of the South on Saturday, prompting forecasters to issue a rare "particularly dangerous situation" alert amid severe storms that have killed at least one person ...
A PX-1000 transportable radar unit operated by University of Oklahoma's Advanced Radar Research Center was used to observe the path of the tornado through Moore, with researchers detailing a "loop" in the path near the Moore Medical Center as a "failed occlusion". [41] EF3 May 28, 2013: Bennington, Kansas — — 264 mph (425 km/h)