CFI Practice Exam – Certified Flight Instructor Prep & Practice Test

The abbreviation "PR" in METAR reports stands for "Partial." This indication is used to describe specific weather phenomena, often in relation to visibility or coverage of phenomena like clouds, precipitation, or obscuration. For instance, when meteorologists report visibility obscured by dust or fog in a 'partial' manner, they will use the "PR" abbreviation to provide concise information about the conditions.

The other options represent different weather phenomena: "PE" refers to "Partial Echo," which relates to weather radar data; "SA" stands for "Sand," indicating the presence of airborne sand; while "SH" indicates "Showers," referring to instances of intermittent rain. Understanding these abbreviations is essential for interpreting METAR reports and effectively communicating the weather information relevant to pilots and flight instructors.