This allows the surface pressure at the center of the low to drop even more. Since air cannot reach the center directly because of centrifugal force, air sinks from the stratosphere. Such sinking air warms at the dry adiabatic rate and the region is cloudless and warm. This is the eye of the storm. The effect is greater the faster the speed and or greater the smaller the diameter of motion.
Centrifugal force is small around low-pressure zones because the area is smaller.
At some point the air is expelled once it reaches the proper threshold of speed. This distance and speed are balanced around lows. The air can't go any farther into the center before air from the upper atmosphere drops down the center of the low and hats up. When the air drops into the center of the eye it heats up and become hot dry air. Remember that the isobars are closer in the center, air spirals into the center and can only get so far before it gets expelled.