What is Air Pressure?
Air pressure, also known as atmospheric pressure, is the weight of air molecules pressing down on the Earth’s surface. It is measured in units such as inches of mercury (inHg) or millibars (mb). Changes in air pressure play a significant role in weather formation and storm activity.
In weather forecasting, falling air pressure often signals an approaching storm or severe weather, while rising pressure generally indicates clear skies and stable conditions. Low-pressure systems are commonly associated with thunderstorms, tornadoes, and hurricanes, as they create an environment where warm, moist air can rise and form powerful storm systems.
For storm shelters and safe rooms, understanding air pressure is crucial. During a tornado, rapid pressure drops can lead to structural damage, and proper ventilation in storm shelters ensures occupants do not experience discomfort due to sudden air pressure changes. Well-designed tornado shelters are built to withstand these atmospheric fluctuations, keeping families safe.