At 1800 UTC, 0.25 inches of precipitation occurred 12 hours ago. What is recorded in column 14 (Remarks)?

In the context of aviation weather observations, column 14 in the METAR report is typically reserved for remarks, including information on significant weather events or additional relevant details. When determining entries for this column, it’s essential to evaluate the timing of the precipitation in relation to the observation time.

In this scenario, the precipitation occurred 12 hours prior to the observation time of 1800 UTC. Since the standard reporting period for precipitation in METARs is usually the past hour or current conditions, precipitation that happened 12 hours ago is considered too outdated to be recorded or emphasized in the remarks column. Therefore, for this observation, no specific report regarding 0.25 inches of precipitation is required because it falls outside the standard reporting timeframe.

Hence, the appropriate remark in column 14 would indicate the absence of recent significant weather information, which is represented by stating that no report is required. This aligns with meteorological reporting standards, which prioritize current weather conditions over older events that no longer affect the situation at the time of the observation.