ATPL Canadian Meteorology, Radio Aids to Navigation, and Flight Planning (SAMRA) Practice Test 2026 - Free ATPL Practice Questions and Study Guide

A gust will be reported in a METAR or TAF when it exceeds the mean wind speed by at least 5 knots. This reporting criterion is established to provide pilots and meteorologists with relevant information about significant fluctuations in wind conditions that could impact flight operations.

When the gust strength meets this threshold, it indicates a potential for turbulent conditions, which may affect aircraft performance during takeoff, landing, or while in flight. Such gusts are often a result of atmospheric disturbances or wind shear, which can lead to a variation in wind speed. Reporting gusts in this manner helps in conveying critical information to aid in flight safety and efficient flight planning.

The other options do not accurately represent the criteria for gust reporting. Gusts cannot be reported if they are below the mean wind speed or if their strength is 15 knots or less, unless they surpass the mean by the specified 5 knots. Also, simply forecasting gust strength exceeding the mean wind speed does not satisfy the reporting criteria unless it meets the established difference.