Which weather phenomenon poses the greatest risk of causing a loss of control for a small UAS?
Why →
Thunderstorms combine multiple hazards: severe turbulence and wind shear capable of overwhelming flight controller corrections, lightning that can directly strike or induce currents in the aircraft, hail, and rapid visibility changes. A microburst from a nearby thunderstorm can produce downdrafts exceeding 6,000 fpm. Far beyond any sUAS's ability to compensate.The trap →
Light drizzle at 4 miles visibility is marginal but manageable under Part 107. A 3% density reduction from humidity is measurable but minor. Thunderstorms combine all hazards simultaneously. They are categorically more dangerous than any other weather condition.SOURCE → PHAK Chapter 12, Weather Theory / FAA Remote Pilot Study GuideCHECKED APR 21ACS III.A.K1MED