Coastal communities were inundated not just by wind-driven rain, but by a wall of water directly linked to this intense atmospheric pressure drop. The Science Behind the Numbers Barometric pressure is measured using instruments called barometers, which calculate the weight of the air column above the sensor.
How Many Millibars Was Hurricane Katrina: The Shocking Pressure Reading
Katrina's surge, measuring over 25 feet in some locations, was amplified by the pressure difference between the ocean and the low-pressure center. This difference of 111 millibars signifies an extremely low-pressure system, which is directly responsible for the catastrophic winds that followed.
During Katrina's peak intensity in the Gulf of Mexico, these instruments recorded the 902 mb low just before the storm made landfall. Understanding how many millibars Hurricane Katrina registered provides a window into the storm's mechanics and its devastating capability.
How Many Millibars Was Hurricane Katrina: Understanding the Pressure Drop
To put this into perspective, a typical sea-level pressure is around 1013 mb. Hurricane Katrina made landfall with a staggering central pressure of 902 millibars (mb).
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