AVIATION WEATHER CODES

Decode aviation weather codes

Enter an aviation weather abbreviation or coded cloud layer to look up its meaning in the WMO aviation weather terminology covered by this reference.

Aviation report or code

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WMO VOCABULARY

WMO aviation weather code meanings

The reference covers WMO terminology used for aerodrome present and forecast weather, recent weather and cloud amounts. Definitions are tied to the applicable WMO code vocabulary rather than inferred from an abbreviation alone.

SCOPE

Codes and report syntax are kept separate

Weather-code meanings and report syntax are treated separately. A recognized code is defined where the applicable WMO terminology establishes its meaning. Other recognizable report syntax is left without an expanded definition rather than being assigned one by assumption.

These weather codes commonly appear in METAR reports and TAF forecasts, where they can be read in the context of the complete report.