UAS Weather Assessment 2

Question 1

What does a METAR report's 'TS' designator indicate?

Accepted Answer

Thunderstorm activity

Answer

TS in a METAR stands for thunderstorm, which poses significant hazards to sUAS operations.

Question 2

Which wind condition is most dangerous for sUAS operations near structures?

Accepted Answer

Gusting winds that vary more than 10 knots from mean speed

Answer

Gusty conditions create unpredictable turbulence and mechanical eddies around buildings that can destabilize small UAS.

Question 3

At what relative humidity level does fog typically form?

Accepted Answer

Near 100% (saturation)

Answer

Fog forms when air reaches near 100% relative humidity and water droplets condense around available nuclei.

Question 4

A remote pilot notices the sky has a green or yellowish tint. This most likely indicates:

Accepted Answer

Severe thunderstorm or hail potential

Answer

A greenish sky is a well-known visual indicator of severe thunderstorm activity and potential large hail.

Question 5

What aviation weather product provides forecasts for specific airports including wind, visibility, and sky conditions?

Accepted Answer

TAF

Answer

A Terminal Aerodrome Forecast (TAF) provides 24-30 hour forecasts of weather conditions at specific airports.

(UAS) Unmanned Aircraft Systems Certified Practice Test