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 minute-by-minute weather updates with varying levels of detail (AWOS-A to AWOS-4), while ASOS (Automated Surface Observation System) is more sophisticated, offering continuous observations for METARs and TAFs, including enhanced precipitation and time-averaged cloud/visibility analysis.
- Both systems are crucial sources of automated weather information for aviation, accessible in-flight via radio and on the ground via telephone.
- Automated weather reports from AWOS and ASOS are considered official for FAA regulatory compliance, and a pilot's personal observations cannot supersede these reports for meeting flight minimums.
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