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SESK: Stuff Everyone Should Know · sesk.info/drone-asos-awos-minute-observations

How often can ASOS and AWOS provide automated observations?

They provide continuous minute-by-minute observations.

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  1. Once each morning
  2. Every six hours only
  3. Continuously, minute by minute ✔

Why: ASOS and AWOS continuously sample airport weather. Their minute-by-minute observations support METAR production and other aviation weather information.

Huh, didn't know that: ASOS and AWOS are the primary surface weather observing systems in the United States.

The dad joke
Why did AWOS watch the clock? It had another update every minute.
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References

Answer: Continuously, minute by minute. ASOS and AWOS continuously sample airport weather. Their minute-by-minute observations support METAR production and other aviation weather information.

  1. FAA Aeronautical Information Manual, 7-1-13 www.faa.gov/air_traffic/publications/atpubs/aim_html/chap7_section_1.html
    The ASOS/AWOS will provide continuous minute‐by‐minute observations
    Checked 2026-10-09.

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