Which of the following is a sign of a microburst?

A microburst is a localized downburst of air that descends rapidly from a thunderstorm and spreads out upon reaching the ground. One of the key indicators of a microburst developing is dry air in combination with thunderstorms. As moist air rises within a storm, it cools and condenses, leading to intense precipitation. However, if the surrounding environment is dry, this precipitation can evaporate before reaching the ground, creating a downdraft that can result in a sudden burst of strong, damaging winds upon impact with the surface.

This phenomenon often occurs when thunderstorms form in environments with significant temperature differences and varying humidity levels. The presence of dry air enhances this process, as it accelerates the evaporation of raindrops, leading to a more intense downburst as the cooled air sinks rapidly. Therefore, the combination of dry air and developing thunderstorms is a strong indicator of the potential for a microburst to occur.