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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.
A tornado watch is typically less severe than a tornado warning and encompasses a larger area like multiple counties and states. It serves as a signal for people to prepare in case of an emergency.
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 ...
By comparison, tornado warnings come out when twisters have been spotted on the ground or on radar. During a warning, people are urged to go inside right away.
When a tornado warning is issued it means a tornado has been sighted or indicated by weather radar. There is imminent danger to life and property. There is imminent danger to life and property.
A few weeks after the tornado, the National Oceanic and Atmospheric Administration released details about an experimental warning system which was tested before and during the tornado. This new warning system, named Warn-on-Forecast System (WoFS), was created by the Hazardous Weather Testbed housed in the National Weather Center in Norman ...
According to the National Weather Service, a tornado warning means there’s imminent danger to life and property in the warning area, and you should immediately move to an interior room on the ...
Past warnings. The weather service's Storm Prediction Center — whose mission is to provide "forecasts and watches for severe thunderstorms and tornadoes” — says that the term was first used on April 2, 1982 by forecaster Robert H. Johns, in conjunction with a tornado watch.