I only needed minimum pressure to get a close shave.

By the 24th, it had a minimum central pressure of 992 mbar.

On that day the minimum central pressure dropped to 925 millibars.

A minimum functional pressure is added to this value to give the critical pressure.

The minimum central pressure in the depression was 1006 mbar.

It reached a minimum pressure of 967 mb on 27 February.

However, the observed minimum pressure in Katrina was slightly lower.

A minimum central pressure was read of 990 millibars within the storm.

During that time period, the observer reported a minimum pressure of 28.52 hPa.

The minimum pressure was found to be at least 997 mb.