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Tornado watch or tornado warning? What are the differences and which is worse?

With several US states threatened by tornadoes, we take a look at the difference between a tornado watch and a tornado warning.

Los tornados a menudo se concentran en el ‘callejón de los tornados’ en Estados Unidos. Conoce los estados que conforman el ‘Tornado Alley’.
Meindert van der HavenGetty Images

The Federal Alliance for Safe Homes (FLASH) is a nonprofit organisation that advocates for safeguarding people and property from weather disasters. They have published a tornado weather protection fact sheet that aims to advise people how best to protect themselves before, during, and after a tornado strike.

The differences between a tornado watch and a tornado warning

  • A tornado watch is declared when conditions exist which are likely to result in a tornado forming. These can cover areas as small as cities to multiple states.
  • A tornado warning is issued when a tornado has been sighted or indicated by weather radar. A warning means that it is time to take action because there is imminent danger to life and property.

See also:

What to do if you’re under a tornado warning

If you are under tornado warning, there are a number of actions that can be taken to keep you and your loved ones safe. This includes taking shelter in an ICC 500 certified tornado shelter or a safe room as well as not opening windows. Other advice includes taking cover in a windowless room as well as lying under something protective, such as a mattress.

Not everyone will be indoors when a tornado strikes. If you are unable to get inside then seek shelter in a low-lying area such as a ditch or ravine, abandoning your vehicle.