3N8 Mahnomen County

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 130° true at 4 kt · VFR · 40 min old

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

17 32% 3400 ft · 3 kt head, 2 kt x-left

9 31% 2720 ft · 3 kt head, 3 kt x-right

35 19% 3400 ft · 3 kt TAIL, 2 kt x-right

27 18% 2720 ft · 3 kt TAIL, 3 kt x-left

Why — evidence behind this answer

Runway 17

WIND 3 kt headwind, 2 kt left crosswind 40 min ago +0.13
PRIOR runway length 3400 ft +0.02

Runway 9

WIND 3 kt headwind, 3 kt right crosswind 40 min ago +0.12
PRIOR runway length 2720 ft -0.02

Runway 35

WIND 3 kt TAILWIND, 2 kt right crosswind 40 min ago -0.43
PRIOR runway length 3400 ft +0.02

Runway 27

WIND 3 kt TAILWIND, 3 kt left crosswind 40 min ago -0.42
PRIOR runway length 2720 ft -0.02

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	40 min
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?

3N8 field & runways

Mahnomen County, Mahnomen, Minnesota. Field elevation 1246 ft. Non-towered (NON-ATCT). Magnetic variation 2.0°E on record, 1.8°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 0.045°/year west — about 1° every 22 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
17	168.2°	166.4°	matches	3,400 ft	ASPH	left
27	270.4°	268.5°	matches	2,720 ft	TURF
35	348.2°	346.4°	matches	3,400 ft	ASPH	left
9	90.4°	88.5°	matches	2,720 ft	TURF

Generated 09:15:07Z · auto-refreshes · JSON

3N8 ☆ Mahnomen County