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Wind Variability and Surface Visibility Quiz

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Wind Variability and Surface Visibility Quiz

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Questions and Answers

How are wind shifts defined in the text?

A change in direction by at least 45 degrees (correct)

A change in speed by at least 10 knots

A change in speed by at least 5 knots

A change in direction by at least 90 degrees

When can data from alternate equipment be used for determining winds according to the text?

Only when the primary sensor is inoperative

Never, data from alternate equipment should never be used

Always, regardless of the primary sensor's status

Only when the primary sensor is considered unrepresentative (correct)

How should wind direction be determined manually using a compass?

Convert magnetic direction to true direction before taking the reading

Take a 30-second average reading

Face away from the wind

Take a 2-minute average reading (correct)

What is the minimum criteria for sustained winds during a wind shift according to the text?

At least 10 knots Signup and view all the answers

When should winds be reported as estimated according to the text?

When obtained from any source other than the primary sensor for the active runway Signup and view all the answers

What is the main consideration while determining the predominant wind direction manually?

Take note of the limits of variability for reporting Signup and view all the answers

In wind observing standards, what speed qualifies as peak wind data?

The highest measured wind speed of all sensors Signup and view all the answers

What should be done with incomplete wind records if peak wind speed occurred within the missing data period?

Treat it as missing data Signup and view all the answers

'Predominant wind direction' refers to which type of measurement according to the text?

'Primary' measurement Signup and view all the answers

'Peak wind data' is determined by which sensors according to the text?

'Primary' active wind sensor only Signup and view all the answers