What phenomenon is often a result of high humidity beneath temperature inversions?

High humidity beneath temperature inversions commonly leads to fog formation. A temperature inversion occurs when a layer of warm air traps cooler air at the surface, which can result in damp conditions. When the air near the ground is saturated with moisture, it creates an environment conducive to fog. Fog forms when water vapor condenses into tiny water droplets suspended in the air, reducing visibility.

Inversions typically inhibit vertical mixing of the air, allowing the humidity to remain concentrated near the surface. This stagnant layer of moist air can lead to dense fog, especially in low-lying areas or near bodies of water. While dew formation is related to high humidity, it typically occurs under clear skies when temperatures drop at night and is not specifically a product of temperature inversions. Similarly, lightning is a result of certain atmospheric conditions involving storm systems, and cloud formation can occur in various conditions but is not specifically tied to inversions at low humidity levels. Thus, fog is the most direct phenomenon linked to high humidity conditions under temperature inversions.