Tornadoes are among the most powerful atmospheric phenomena on Earth, capable of transforming calm skies into destructive forces within minutes.
Forming from a rotating thunderstorm known as a supercell, these rapidly rotating columns of air extend from the thunderstorm base to the ground and depending on the atmospheric conditions, can vary in strength, size, and duration.
How do we classify or rate tornadoes? Experts use the Enhanced Fujita Scale. A scale based on damage indicators that ranges from EF-0 (65-85mph) to EF-5 (201+mph). There also is a EF-U category and that is when a tornado touches down but doesn't produce any damage indicators.
Understanding tornado terminology is essential into recognizing threats and responding appropriately when severe weather strikes.
WATCH: When a tornado watch is issued, this is when the atmospheric conditions are favorable for tornadoes to form.
WARNING: When the National Weather Service issues a tornado warning for a certain storm, this means a tornado has been spotted or detected by radar. Take immediate action by seeking shelter!
EMERGENCY: This is the highest level of tornado warning issued by the National Weather Service and is ONLY used for the most life-threatening situations. It is designed to prompt immediate, decisive action, emphasizing the urge to seek shelter.
When a tornado threatens your area, the safest places are those that put as many walls as possible between you and the outside. Ideally, a basement is the best place to take shelter. However, if the building you are in doesn't have a basement, look for an interior hallway, bathroom, or closet.
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