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NEXRAD radar imagery of an EF2 tornado near Alta Vista, Kansas on March 13, 2024 (supercell with hook echo on left, velocity on right). The weather system responsible for the outbreak was evident multiple days prior, but the area that received the worst tornadoes was not expected to be the main threat.
Update, 9:25 p.m.: More portions of Butler County are under a tornado warning. The National Weather Service issued a tornado warning for Oxford, Hamilton and Trenton in effect until 9:45 p.m.
During a tornado warning, people should seek shelter in interior rooms on the lowest floors of study buildings, and keep away from windows. (This story has been updated to add new information ...
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.
In the United States, the year started off somewhat slow with a below average number of tornadoes through the first three months. However, the El Niño pattern that was in place during that period weakened in April; the pattern shift caused the more traditional Tornado Alley zone to rapidly become extremely favorable for tornado outbreaks, and several large outbreaks occurred in late spring.
PDS tornado warnings are currently issued on an experimental basis by the 38 National Weather Service Weather Forecast Offices within the Central Region. [17] The criteria for a PDS warning are when a tornado on the ground has been spotted or confirmed, or a significant tornado is expected based on radar signatures.