Answer:
Changes in barometric pressure readings point out changes in high and low pressure systems. High pressure systems are typically associated with clear skies and fair weather, while low pressure systems are typically associated with stormy and unsettled weather. As air rises in a low pressure system, it cools and water vapor condenses, leading to the formation of clouds and precipitation. In contrast, air sinks in a high pressure system, leading to clear skies and less chance of precipitation. By monitoring changes in barometric pressure, meteorologists can track the movement of these pressure systems and make weather predictions.