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Significant weather descreption

This register provides terms that may be used to describe significant [recent], present and forecast weather - enumerating the set of meteorologically valid options defined in WMO No. 306 Vol 1 code-table 4678. Each term comprises one or more of the elements from code-table 4678: 'intensity or proximity', 'descriptor', 'precipitation', 'obscuration' and 'other'. for details please see 306: Significant Weather

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