How should the wind direction be encoded for a reported direction of 111°?

The correct encoding for wind direction is based on the convention used in aviation weather reporting, where the wind direction is specified in whole degrees from true north. When reporting a direction of 111°, it is customary to round the direction to the nearest 10-degree increment. In this case, the closest increment is 110°.

This rounding process is important for simplifying communication and ensuring clarity in weather reporting. Wind direction is typically reported in a way that provides a general idea of wind trends rather than an exact degree, especially in practical applications like aviation where slight variations might not significantly affect operations.

The choice of 110° effectively conveys the essence of the wind direction while adhering to standard reporting practices. Other choices like 111°, 112°, or 115° do not follow the rounding rules and thus do not represent the proper encoding for aviation weather reports.