FAA Flight Instructor Airplane (FIA)Weather and Weather ServicesMedium
A pilot studying frontal systems learns that an occluded front forms when a fast-moving cold front overtakes a slower-moving warm front. What is a key characteristic of weather associated with an occluded front?
- AIt produces only clear skies with no precipitation
- BIt typically brings a combination of both cold and warm frontal weather characteristics
- CIt only occurs in tropical latitudes
- DIt always dissipates warm air masses instantly upon formation
Show answer & explanationAnswer & explanation
Correct answer: B. It typically brings a combination of both cold and warm frontal weather characteristics
An occluded front results from the merging of cold and warm frontal characteristics, since the warm air mass is lifted entirely off the surface; this often produces complex, prolonged weather with features of both frontal types, including extended precipitation and cloud layers.
Why the other options are wrong
- A. Occluded fronts frequently produce precipitation, not clear skies.
- C. Occluded fronts are common in mid-latitude weather systems, not limited to the tropics.
- D. Warm air is lifted aloft, not instantly dissipated.
Occluded Front
A frontal boundary formed when a fast-moving cold front catches up to and overtakes a slower warm front, lifting the warm air mass completely off the surface.
- Two types: cold-type and warm-type occlusion
- Weather combines characteristics of both cold and warm fronts
- Often associated with the mature/dissipating stage of a mid-latitude cyclone
Memory trick: Occlusion = a frontal sandwich, warm air squeezed out.