AWOS: Automated weather observing system. A suite of weather sensors of many different configurations either procured by the FAA or purchased by individuals, groups or airports that are required to meet FAA standards. AWSS — automatic weather sensor system — is functionally the same as ASOS.
Everything You Need to Know about AWOS and ASOS
Key Takeaways:
- AWOS (Automated Weather Observing System) provides real-time, minute-by-minute weather updates with various levels of sophistication, from basic altimeter settings to comprehensive environmental data including precipitation type and runway conditions.
- ASOS (Automated Surface Observation System) is a more sophisticated system designed for comprehensive hourly reports and weather forecasting, offering advanced capabilities like determining precipitation type and intensity, and detailed cloud/visibility analysis.
- Both AWOS and ASOS information is accessible to pilots in flight and on the ground; however, a critical FAA legal interpretation states that automated weather reports take precedence over a pilot's visual assessment for determining VFR minimums.
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