What is the atmospheric pressure inside a tornado?

The pressure at the core of a tornado vortex is related to the intensity of the tornado: The lower the pressure, the stronger the winds at the radius of maximum winds. read more

The pressure at the core of a tornado vortex is related to the intensity of the tornado: The lower the pressure, the stronger the winds at the radius of maximum winds. There have been only a few reliable measurements of the pressure inside a tornado, but in a strong tornado, it might be as much as 100 millibars (mb) lower than the general atmospheric pressure well outside of the tornado. read more

The generally estimated pressure drop inside a tornado ranges up to 200mb depending of the ferocity (F number). 100mb is the highest ever recorded although larger tornadoes may be expected to show larger diferences. read more