3S8 Grants Pass

PROBABLE 68%

Runway 31 — local convention slightly favors it

No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available. No weather observation available.

certainty: 68% evidence: NONE no tower now

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31 62% 4001 ft · calm-wind rwy

13 38% 4001 ft

Active NOTAMs affecting runways

DISPLACED RWY 13 until 11-03 23:59Z

RWY 13 THR RELOCATED 699FT DECLARED DIST: TORA 4700FT TODA 4700FT ASDA 4700FT LDA 4700FT.

LIGHTING RWY 13 until 11-03 23:59Z

RWY 13 RWY END ID LGT U/S

APCH OTS RWY 13 until 02-15 20:31Z

IAP GRANTS PASS, GRANTS PASS, OR.
RNAV (GPS)  RWY 13, AMDT 1A...
PROCEDURE NA.
2607062031-2702152031EST

DISPLACED RWY 31 until 11-03 23:59Z

RWY 31 DECLARED DIST: TORA 4700FT TODA 4700FT ASDA 4700FT LDA 4700FT.

Why — evidence behind this answer

Runway 31

PRIOR 31 is the designated calm-wind runway +0.50

Sources consulted

source	status	note
D_ATIS	UNAVAILABLE	No D-ATIS at this field
METAR	UNAVAILABLE	No weather observation found
ADSB	UNAVAILABLE	No ADS-B track history here yet
NOTAM	OK
CIFP	NOT_CONFIGURED	Instrument procedures: phase 4

Recent operations

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

Was this right?

3S8 field & runways

Grants Pass, Grants Pass, Oregon. Field elevation 1130 ft. Non-towered (NON-ATCT). Magnetic variation 17.0°E on record, 14.0°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 0.106°/year west — about 1° every 9 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
13	141.6°	127.7°	matches	4,001 ft	ASPH	left
31	321.6°	307.7°	matches	4,001 ft	ASPH	left	calm-wind RWY 31 CALM WIND RWY.

Generated 10:57:28Z · auto-refreshes · JSON

3S8 ☆ Grants Pass