FAA Part 107 Remote Pilot (UAG)WeatherMedium
While monitoring a developing thunderstorm cell near the operating area, a pilot observes heavy rain, frequent lightning, and strong gusty surface winds, with the cell producing simultaneous updrafts and downdrafts. Which stage of the thunderstorm life cycle is currently occurring?
- ATowering cumulus stage
- BDissipating stage
- CCumulus stage
- DMature stage
Show answer & explanationAnswer & explanation
Correct answer: D. Mature stage
The mature stage is the most violent phase, marked by the coexistence of strong updrafts and downdrafts, heavy precipitation, frequent lightning, and gusty winds at the surface. The cumulus stage is dominated by updrafts only, while the dissipating stage is dominated by downdrafts and decreasing precipitation.
Why the other options are wrong
- A. Towering cumulus describes a cloud type, not an official life cycle stage.
- B. The dissipating stage is characterized by weakening downdrafts and diminishing rain, not peak intensity.
- C. The cumulus stage has only updrafts and no precipitation reaching the surface yet.
Thunderstorm Mature Stage
The most hazardous phase of a thunderstorm's life cycle, featuring simultaneous updrafts and downdrafts, heavy rain, lightning, hail, and gusty surface winds.
- Begins when precipitation starts falling and reaches the surface
- Downdrafts spread out at the surface as gust fronts
- Most severe turbulence, wind shear, and icing occur during this stage
Memory trick: 'Mature = MAX mayhem — up and down drafts duking it out.'