What are the minimum weather conditions for a precision approach at an alternate airport?

The minimum weather conditions for conducting a precision approach at an alternate airport are indeed a 600-foot ceiling and 2 statute miles of visibility. These requirements are specified in aviation regulations to ensure safe operations when diverting to an alternate airport where a precision approach is available. A precision approach typically refers to an instrument landing system (ILS) where a precise approach path is established, allowing for more accurate landings in low visibility conditions.

The rationale behind these specific minima is reinforced by safety considerations. A ceiling of 600 feet provides sufficient vertical clearance for pilots to execute a safe landing if required. Additionally, having 2 statute miles of visibility ensures that pilots can see and identify the runway environment before landing. These standards help facilitate safe operations while enabling pilots the ability to divert as necessary under regulated conditions.

Given the context, other conditions either present higher minimums that don't align with the regulatory standards for precision approaches, or they reflect circumstances more appropriate for different types of approaches or operations.