PPL theory · learn with explanations
PPL meteorology questions require you to distinguish observations, forecasts and physical quantities. These examples review METARs, TAFs and dew point: read the question, choose an answer and compare your reasoning with the explanation.
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To review PPL meteorology, start with the difference between an observation and a forecast. A METAR gives observed conditions; in a TAF, look for the validity period and expected changes. For wind questions, distinguish direction and speed: 24012KT means wind from 240 degrees at 12 knots. Temperature and dew point provide another useful comparison: a small difference indicates air close to saturation. The exercises below practise these three readings, with an explanation for each answer.
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A METAR reports observed conditions; a TAF forecasts conditions for a defined period.
A METAR describes weather observed at a station at the report time. A TAF contains an aerodrome forecast with a validity period. The observation time and forecast period therefore have different meanings: check them before comparing the reports.
The temperature at which air becomes saturated when cooled at constant pressure without changing its water vapour content.
Dew point is related to the water vapour present in the air. A small temperature–dew point spread indicates air close to saturation. This is useful when considering cloud or fog, but it does not establish that either will form: local conditions and their evolution also matter.
Wind from 240° true, at 12 knots.
The first three digits give the direction from which the wind blows, referenced to true north; the next two give speed, and KT means knots. Wind from 240° therefore comes from the southwest. METAR wind direction is not a heading to fly and must not automatically be treated as magnetic.
The examples above are original teaching exercises. Sign in to your account to practise by subject and find your quizzes in the history shared with the FlightDesk apps.
Practise for freeStudy exercises, not official examination questions. To explore the concepts: FAA · Pilot’s Handbook of Aeronautical Knowledge.
