KPHN St Clair County Intl

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. No ADS-B traffic data available.

certainty: — evidence: NONE no tower now

Wind 200° true at 5 kt · VFR · 54 min old · from KMTC (22.8 nm away)

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

22 38% 5104 ft · 5 kt head, 1 kt x-left

28 29% 4000 ft · 1 kt head, 5 kt x-left

10 24% 4000 ft · 1 kt TAIL, 5 kt x-right

4 10% 5104 ft · 5 kt TAIL, 1 kt x-right

Why — evidence behind this answer

Runway 22

WIND 5 kt headwind, 1 kt left crosswind 54 min ago +0.25
PRIOR runway length 5104 ft +0.02

Runway 28

WIND 1 kt headwind, 5 kt left crosswind 54 min ago +0.03
PRIOR runway length 4000 ft -0.02

Runway 10

WIND 1 kt TAILWIND, 5 kt right crosswind 54 min ago -0.17
PRIOR runway length 4000 ft -0.02

Runway 4

WIND 5 kt TAILWIND, 1 kt right crosswind 54 min ago -1.03
PRIOR runway length 5104 ft +0.02

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	54 min	Nearest station KMTC (22.8 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?

KPHN field & runways

St Clair County Intl, Port Huron, Michigan. Field elevation 650 ft. Non-towered (NON-ATCT). Magnetic variation 7.0°W on record, 8.0°W 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 0.005°/year east — about 1° every 200 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
10	94.7°	102.7°	matches	4,000 ft	ASPH	left
22	216.1°	224.0°	matches	5,104 ft	ASPH	left
28	274.7°	282.7°	matches	4,000 ft	ASPH	left
4	36.0°	44.0°	matches	5,104 ft	ASPH	left	ILS

Generated 11:50:24Z · auto-refreshes · JSON

KPHN ☆ St Clair County Intl