runwayinuse

KSUN Friedman Meml

31
WIND_INFERRED 90%

Runway 31 — favored by the wind (8 kt at 310° 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 Class D

N 31 13

Wind 310° true at 8 kt · VFR · 46 min old · from KSUN (0.4 nm away)

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31 99% 7550 ft · 8 kt head, 2 kt x-left
13 <1% 7550 ft · 8 kt TAIL, 2 kt x-right
Why — evidence behind this answer

Runway 31

Runway 13

Sources consulted

sourcestatus agenote
D_ATISUNAVAILABLE No D-ATIS at this field
METAROK 46 min Nearest station KSUN (0.4 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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KSUN field & runways

Friedman Meml, Hailey, Idaho. Field elevation 5320 ft. Class D airspace. Towered. Magnetic variation 13.0°E on record, 12.0°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
13 144.9° 132.9° matches rule gives runway 14 in ~22 yr 7,550 ft ASPH left
31 324.9° 312.9° matches rule gives runway 32 in ~22 yr 7,550 ft ASPH left

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