If the prevailing visibility is determined to be 32SM, how should it be reported?

When prevailing visibility is calculated at 32 statute miles (SM), it is important to round the measurement according to standard reporting practices. In aviation weather reporting, visibility is reported in whole numbers and the convention is to round to the nearest whole number when it exceeds specific thresholds.

In this case, since 32 SM is more than 30 miles but less than 35 miles, it is rounded down to 30. This rounding convention is used to ensure consistency in the way visibility is communicated to pilots and aviation personnel. Rounding down avoids potential misinterpretations and makes it easier to convey conditions succinctly. Therefore, the appropriate reported value for prevailing visibility of 32 SM would be 30.

This rounding consideration aligns with the procedures set forth in aviation regulations, which prioritize clarity and standardization in weather reporting to support flight safety.