Which of the following is an example of wind data LLWAS can indicate during wind shear events?

• A. Offshore wind velocity
• B. Airport direction and speed
• C. Wind gust frequency
• D. Surface temperature trend

Answer: (B)

LLWAS focuses on detecting wind shear by gathering and comparing wind data at the airport itself. It uses a network of wind sensors around the field to measure wind speed and direction at the surface and look for discrepancies that indicate changes in the lower atmosphere. The clearest wind data LLWAS provides during wind shear events is the airport’s own wind direction and speed, because shifts or differences across the sensor network signal the presence of shear near the runways. Offshore wind velocity, surface temperature trends, and gust frequency are not what LLWAS primarily reports for identifying wind shear in the airport environment.