FAA Airline Transport Pilot (ATM)Meteorology and Weather ServicesMedium
A dispatcher notes that a fast-moving cold front will pass the airport within the hour. Which weather conditions are most characteristic of the period immediately following the frontal passage?
- ASteady rain and stratus clouds persisting for many hours with little wind change
- BBrief but intense showers, towering cumulus clouds, gusty winds, followed by rapid clearing
- CContinuous light drizzle with a gradual wind shift and no temperature change
- DWidespread advection fog and low ceilings lasting through the following day
Show answer & explanationAnswer & explanation
Correct answer: B. Brief but intense showers, towering cumulus clouds, gusty winds, followed by rapid clearing
Fast-moving cold fronts produce a narrow band of intense, showery precipitation with cumuliform clouds and gusty, shifting winds, followed by rapid clearing and a noticeable temperature drop behind the front—unlike the prolonged steady rain typical of warm fronts.
Why the other options are wrong
- A. Steady rain and stratus clouds are more typical of a warm front, not a fast-moving cold front.
- C. Cold fronts typically bring an abrupt wind shift and temperature drop, not gradual, unchanged conditions.
- D. Advection fog is unrelated to fast frontal passage and typically requires calmer, more gradual conditions.
Fast-Moving Cold Front Weather
Weather associated with a rapidly advancing cold front, characterized by a narrow band of intense showers/thunderstorms, cumuliform clouds, and gusty winds, followed by quick clearing.
- Steep frontal slope produces intense, narrow weather band
- Wind shifts abruptly to the northwest (northern hemisphere) after passage
- Temperature and dew point drop noticeably behind the front
Memory trick: Cold front = 'Quick and Cranky' — fast, violent, then gone.