What indicates that a cold front is passing over you?

A cold front is typically associated with a distinct change in weather conditions as it moves through an area. The correct indication of a cold front passing over is a sharp drop in temperature. Cold fronts occur when a mass of cold air replaces a mass of warm air. As the cold air is denser, it pushes the warmer air upward, leading to a noticeable decrease in the temperature at ground level.

While pressure can rise following the passage of a cold front, the immediate indicator during the passage itself is the drop in temperature. This drop is often felt quite abruptly, reflecting the dynamics of air mass interaction.

In contrast, a sharp rise in pressure might follow after the cold front has passed, but it won't provide immediate evidence of the front's presence. Similarly, an increase in humidity and heavy rainfall may occur before or as the cold front approaches but do not signify the front passing directly. Heavy rainfall typically occurs with the vertical uplift of moist air along the front; however, it doesn't consistently indicate the passage itself like the temperature drop does.