What is encoded in METAR format and includes all basic weather parameters found in the body of the METAR plus specific automated remarks? Also accepts augmented elements and remarks.

• A. The One-Minute Observation (OMO)
• B. METAR
• C. SPECI
• D. Local Observation Report

Answer: (A)

The One-Minute Observation is the METAR-encoded minute-by-minute weather update. It carries all the standard METAR body parameters—wind, visibility, weather, sky condition, temperature/dew point, and altimeter—and adds automated remarks specific to the automated observing system. It is designed to accept augmented elements and remarks beyond the basic METAR data. That combination fits the description of being encoded in METAR format with the full basic METAR parameters plus automated remarks and additional augmented information. The other options don’t match: METAR is the general report format, SPECI is a special METAR for significant weather changes, and Local Observation Report is a local observation not inherently the minute-by-minute METAR-encoded product with automated remarks.