What weather does an occluded front typically bring?

• A. Widespread precipitation with cooling and a wind shift.
• B. An occluded front forms when a fast-moving cold front catches up with a warm front; it often brings widespread precipitation, cooling, and a shift in wind.
• C. Fronts show no precipitation.
• D. An occluded front results in prolonged heat.

Answer: (B)

When a fast-moving cold front catches up with a warm front, the warm air is forced upward and the boundary becomes an occluded front. This lifting creates widespread precipitation along and ahead of the front, often lasting across large areas. As the system evolves, cooler air from the cold side moves in, so surface temperatures drop. The interaction of the air masses also changes the wind pattern, typically causing a noticeable shift in wind direction as the front passes. So, the combination of widespread precipitation, cooling, and a wind shift is characteristic of an occluded front.