runwayinuse

U89 Glenns Ferry Muni

8
WIND_INFERRED 90%

Runway 8 — favored by the wind (12 kt at 70° true)

Based on wind only — no traffic or ATIS to confirm. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available.

certainty: 90% evidence: WEAK no tower now

N 8 26

Wind 070° true at 12 kt · VFR · 38 min old · from KGNG (24.9 nm away)

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8 99% 3050 ft · 11 kt head, 5 kt x-left
26 <1% 3050 ft · 11 kt TAIL, 5 kt x-right
Why — evidence behind this answer

Runway 8

Runway 26

Sources consulted

sourcestatus agenote
D_ATISUNAVAILABLE No D-ATIS at this field
METAROK 38 min Nearest station KGNG (24.9 nm away)
ADSBUNAVAILABLE No ADS-B track history here yet
NOTAMOK
CIFPNOT_CONFIGURED Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (No ADS-B track history here yet)

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U89 field & runways

Glenns Ferry Muni, Glenns Ferry, Idaho. Field elevation 2536 ft. Non-towered (NON-ATCT). Magnetic variation 17.0°E on record, 12.2°E today.

The FAA's variation of record is the number this field was surveyed against; the second is where north points now, from WMM2025. It is moving 0.097°/year west — about 1° every 10 years — which is why runway numbers eventually stop matching their pavement.

Runway data from the FAA NASR 01 Oct 2026 cycle. Where NASR locates both thresholds, the true heading is the bearing between them rather than NASR's whole-degree alignment. Magnetic is that heading against today's declination from WMM2025, not the field's variation of record — so it can differ from the chart by the gap between the two shown above. The number painted on the runway is the one ATC uses.
RunwayTrueMagnetic Number LengthSurfacePattern Notes
26 275.4° 263.2° matches rule gives runway 27 in ~18 yr 3,050 ft ASPH left
8 95.5° 83.2° matches rule gives runway 9 in ~18 yr 3,050 ft ASPH left

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