Under what condition is wind shear information included in ATIS for a minimum of 20 minutes after the last report?

• A. When LLWS or microburst is reported or detected
• B. When any wind shear is forecast
• C. Only during daylight
• D. When a pilot reports wind shear only

Answer: (A)

Wind shear information in ATIS is provided for a minimum of 20 minutes after the last report when low-level wind shear (LLWS) or a microburst is reported or detected. LLWS and microbursts pose immediate, high-risk hazards during approach and departure, with rapid changes in wind speed and direction that can affect airspeed control and aircraft handling. Keeping the ATIS wind-shear detail in effect for at least 20 minutes ensures pilots have current, actionable information during critical phases of flight, even after the last observation. If wind shear is only forecast or reported without LLWS or a microburst being detected at the airport, the 20-minute wind-shear mandate does not automatically apply.