Certified Flight Instructor - Flight Instructor Airplane Practice Exam

What is the primary cause of marginal weather in central Kentucky?

1. Low visibility

2. Ceiling and visibility

3. Ceiling

4. Wind shear

The correct answer is: Ceiling

The primary cause of marginal weather in central Kentucky can be attributed to ceiling, which specifically refers to the height of the lowest layer of clouds or obscuring phenomena above the earth's surface. Low ceilings can lead to reduced visibility in the area, particularly when combined with other weather phenomena, but the term "marginal weather" is particularly linked to low cloud layers that can affect flight operations. In regions like central Kentucky, a variety of factors such as moisture from nearby bodies of water and prevailing weather patterns can contribute to the development of low ceilings, which can create challenging flying conditions. While visibility is undoubtedly an important factor in weather assessments, the problem is compounded significantly by low cloud ceilings that restrict the altitude at which pilots can navigate safely. Recognizing that ceiling is a crucial element in defining marginal weather helps understand the implications for flight planning and safety.