INRAT Instrument Rating · Question
A TAF includes a 'PROB30' group. What does this indicate?
In a TAF, 'PROB30' indicates a 30 to less than 50% probability of the specified weather phenomenon occurring during the forecast period. It highlights condition
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Question: A TAF includes a 'PROB30' group. What does this indicate?
Answer options:
- A definite probability of 30% that the specified weather phenomenon will occur.
- A 30% chance of the specified weather phenomenon occurring and remaining for a short period.
- A 30% chance that the specified weather phenomenon will occur, but not definitely. ✅ The probability of the specified weather occurring is between 30% and 50%.
Correct answer: The probability of the specified weather occurring is between 30% and 50%.
Explanation: In a TAF, 'PROB30' indicates a 30 to less than 50% probability of the specified weather phenomenon occurring during the forecast period. It highlights conditions that are possible but not definite.
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Question explanations
- When flying an NDB approach, what instrument is primarily used to track the inbound course?
- How does an aneroid barometer in an altimeter respond to a change in atmospheric pressure?
- What is the primary characteristic that differentiates a Localizer Performance (LP) approach from a Localizer
- When interpreting a TAF (Terminal Aerodrome Forecast), what does 'PROB30' indicate?
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