Those characteristics can include a brief dip in air pressure, a change in wind direction, a change in wind speed, a rise in air temperature or a dip in ultraviolet light reaching the rover.

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Instead of placing our fingers in the air to determine which way the wind is blowing, we enlist the help of others to change the direction of the wind.

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The energy released in the updrafts then interacts with our second ingredient needed for violent tornadoes, the change of the wind direction and speed at you go upward from the ground.

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Murray said Artemis Racing's catamaran was attempting to change direction and turn down wind when it capsized.

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