What weather condition is most likely to occur along warm fronts?

Warm fronts are associated with the gradual lifting of warm, moist air over cooler, denser air. This process leads to the formation of stratiform clouds and results in light rain and overcast conditions. As the warm front moves into an area, the temperature rises, and the moisture in the atmosphere condenses to produce precipitation, which is often gentle and steady rather than intense.

Light rain occurs because the warm air mass ascends slowly, allowing the condensation process to spread out over a larger area, leading to drizzly conditions. This precipitation also typically falls along a broad front, contributing to a more extensive cloud cover.

In contrast, weather systems like heavy snow, thunderstorms, or sunny skies are less characteristic of warm fronts. Heavy snow generally occurs with cold fronts or in winter weather conditions where colder air is present, while thunderstorms are typically associated with cold fronts that create more dynamic and unstable conditions. Sunny skies usually follow the passage of a warm front rather than occur during it, as the front needs to move through before clearer conditions are established.