4S9 Mulino State

WIND_INFERRED 90%

Runway 32 — favored by the wind (8 kt at 290° 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

Wind 290° true at 8 kt · VFR · 21 min old · from KHIO (25.2 nm away)

▶ Listen live — ATIS/CTAF on LiveATC opens LiveATC’s own player · verify the broadcast yourself

32 99% 3425 ft · 5 kt head, 6 kt x-left · calm-wind rwy

14 <1% 3425 ft · 5 kt TAIL, 6 kt x-right · right traffic

Why — evidence behind this answer

Runway 32

WIND 5 kt headwind, 6 kt left crosswind 21 min ago +0.91

Runway 14

WIND 5 kt TAILWIND, 6 kt right crosswind 21 min ago -4.72

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	21 min	Nearest station KHIO (25.2 nm away)
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?

4S9 field & runways

Mulino State, Portland-Mulino, Oregon. Field elevation 260 ft. Non-towered (NON-ATCT). Magnetic variation 19.0°E on record, 14.4°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 0.115°/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
14	159.6°	145.2°	runway 15 by the rule today · 5.2° past	3,425 ft	ASPH	right
32	339.6°	325.2°	runway 33 by the rule today · 5.2° past	3,425 ft	ASPH		calm-wind RY 32 DESIGNATED CALM WIND RY.

Generated 09:14:26Z · auto-refreshes · JSON

4S9 ☆ Mulino State