Instructor » Met Decoding » TREND
A TREND is a landing forecast in the form of a concise statement appended to a METAR, SPECI or METAR AUTO.
The TREND describes any significant changes expected in the following two hours to the conditions described in the report.
It is important to note that a TREND forecast shall supersede, during the validity of the TREND, the aerodrome forecast (TAF) for the aerodrome concerned.
During a short-lived, unforecast weather event, it is not uncommon that the TREND will reflect the expected evolution of the weather event, while the TAF will remain unchanged.