What does "METAR KDTW 292025Z COR" represent?

The term "METAR KDTW 292025Z COR" indicates a corrected report from a previous observation. In METAR reports, the abbreviation "COR" specifically denotes that the data provided has been amended to correct errors found in an earlier observation.

The "METAR" part refers to routine aviation weather reports, while "KDTW" denotes the location, which is Detroit Metropolitan Airport. "292025Z" indicates the date and time of the observation, in this case, the 29th day of the month at 20:25 Zulu time (UTC). The presence of "COR" signals to aviation personnel that the data should be viewed as revised, ensuring that users are aware that they are accessing the most accurate information available.

Other options reference different types of reports that do not match the structure of this METAR report, such as special advisories, new observations, or forecasts, none of which apply here.