Weather Assessment Flashcards
7 cards from real UAS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Weather Assessment flashcards as text
What does a METAR report's 'TS' designator indicate?
Answer: Thunderstorm activity
TS in a METAR stands for thunderstorm, which poses significant hazards to sUAS operations.
Which wind condition is most dangerous for sUAS operations near structures?
Answer: Gusting winds that vary more than 10 knots from mean speed
Gusty conditions create unpredictable turbulence and mechanical eddies around buildings that can destabilize small UAS.
At what relative humidity level does fog typically form?
Answer: Near 100% (saturation)
Fog forms when air reaches near 100% relative humidity and water droplets condense around available nuclei.
A remote pilot notices the sky has a green or yellowish tint. This most likely indicates:
Answer: Severe thunderstorm or hail potential
A greenish sky is a well-known visual indicator of severe thunderstorm activity and potential large hail.
What aviation weather product provides forecasts for specific airports including wind, visibility, and sky conditions?
Answer: TAF
A Terminal Aerodrome Forecast (TAF) provides 24-30 hour forecasts of weather conditions at specific airports.
When flying a sUAS near a lake on a hot summer afternoon, which local weather effect should a pilot anticipate?
Answer: Sea breeze circulation causing shifting winds
Temperature differences between water and land drive sea/lake breeze circulation, causing wind shifts in coastal and lakeside areas.
Which layer of the atmosphere contains most weather phenomena that affect sUAS operations?
Answer: Troposphere
The troposphere is the lowest atmospheric layer where temperature decreases with altitude and virtually all weather occurs.