KGRF Gray AAF (Joint Base Lewis-Mcchord)

UNKNOWN

Unknown — not enough evidence to call a runway

We don't know, and saying so beats guessing. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. ADS-B tracking just started here — traffic history is still building. Wind calm — no directional preference.

certainty: — evidence: NONE Class D

Wind calm · VFR · 57 min old · from KBFI (30.0 nm away)

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15 50% 6124 ft

33 50% 6124 ft

Why — evidence behind this answer

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	57 min	Nearest station KBFI (30.0 nm away)
ADSB	WARMING_UP	100 min	Only 0 min of track history so far
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (Only 0 min of track history so far)

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KGRF field & runways

Gray AAF (Joint Base Lewis-Mcchord), Joint Base Lewis Mcchord, Washington. Field elevation 301 ft. Class D airspace. Towered. Private use. Magnetic variation 16.0°E on record, 14.8°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 0.122°/year west — about 1° every 8 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.
Runway	True	Magnetic	Number	Length	Surface	Pattern	Notes
15	167.1°	152.3°	matches rule gives runway 16 in ~22 yr	6,124 ft	ASPH		ILS
33	347.1°	332.3°	matches rule gives runway 34 in ~22 yr	6,124 ft	ASPH

Generated 11:49:35Z · auto-refreshes · JSON