What cloud abbreviation represents 'No Significant Cloud'?

The abbreviation representing 'No Significant Cloud' is NSC. In meteorological terms, 'No Significant Cloud' indicates that there are no significant cloud formations that may interfere with visibility or weather conditions. This term is particularly relevant for pilots and meteorologists as it signifies a clear sky or minimal cloud presence, thereby providing reassurance regarding flight safety and operational conditions.

The other abbreviations have specific meanings that denote varying levels of cloud cover, which are significant to meteorological reporting. For example, OVC refers to overcast conditions where cloud cover is extensive, while FEW indicates that there are only a few clouds present, and SCT signifies scattered clouds. These conditions could potentially impact visibility and atmospheric considerations for aviation, making NSC a distinct designation to highlight the absence of such concerns.