Which of the following weather phenomena is represented by "FC"?

The abbreviation "FC" in meteorological terms refers to a funnel cloud. A funnel cloud is a cone-shaped cloud that extends from a thunderstorm and is associated with severe thunderstorms and tornadoes. It is important to recognize this phenomenon for safety and operational decision-making, particularly for unmanned aircraft operations, as it indicates potential severe weather conditions that could impact flight.

Understanding funnel clouds is vital for pilots and operators, as they can develop into tornadoes if they make contact with the ground. This creates hazardous conditions not only for manned aviation but also for unmanned aircraft systems (UAS).

The other options represent different weather phenomena but are not accurately reflected by the abbreviation "FC." For instance, flash floods are denoted differently and do not correlate with this specific code, and while fog conditions are certainly a significant weather scenario, they are not represented by "FC" either. Far cloud is not a recognized meteorological term, which further clarifies that the correct interpretation of "FC" is indeed funnel cloud. Understanding these terms is crucial for safe flight operations under the FAA's regulations.