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U.S. Impact-Based Warnings


Staff writers
May 9, 2012 — More than 150 people were killed in the Joplin, Missouri tornado last May. That event was one of the main reasons behind the new Impact-Based Warnings in the U.S.


U.S. National Weather Service hopes new language will scare people into taking cover
U.S. National Weather Service hopes new language will scare people into taking cover

With the help of social scientists, the National Weather Service (NWS) wanted to encourage action from people on the handful of days each year that produce larger tornadoes.

The upgraded warnings include words like "catastrophic," "mass devastation" and "unsurvivable" to scare people into taking cover.

Impact-Based Warnings are currently being tested at five forecast offices in Eastern Kansas and Northwestern Missouri.

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