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The National Weather Service Weather Forecast Office in Jackson, Mississippi, defines a tornado emergency as "an enhanced Tornado Warning that will be issued by NWS Jackson when there is a heightened risk for a killer or violent tornado of EF3 rating or greater." [30] Their criteria for issuing a tornado emergency are:
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.
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.
The tornado emergency designation first came about when a large and destructive tornado hit Oklahoma City, Oklahoma, on May 3, 1999, per the weather service. It was called because the storm was expected to be too severe for the tornado warning, already in effect, to be considered sufficient language to alert people.
Tornadoes are possible in and near the watch area. Review and discuss your emergency plans and check supplies and your safe room. Be ready to act quickly if a warning is issued or you suspect a ...