D50 Crosby Muni

WIND_INFERRED 80%

Runway 31 — favored by the wind (12 kt at 300° 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: 80% evidence: WEAK no tower now

Wind 300° true at 12 kt · VFR · 18 min old · from CYEN (21.3 nm away)

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

31 89% 3800 ft · 12 kt head, 3 kt x-left

21 10% 2680 ft · 3 kt head, 12 kt x-right

3 1% 2680 ft · 3 kt TAIL, 12 kt x-left

13 <1% 3800 ft · 12 kt TAIL, 3 kt x-right

Why — evidence behind this answer

Runway 31

WIND 12 kt headwind, 3 kt left crosswind 18 min ago +2.43
PRIOR runway length 3800 ft +0.04

Runway 21

WIND 3 kt headwind, 12 kt right crosswind 18 min ago +0.29
PRIOR runway length 2680 ft -0.04

Runway 3

WIND 3 kt TAILWIND, 12 kt left crosswind 18 min ago -2.30
PRIOR runway length 2680 ft -0.04

Runway 13

WIND 12 kt TAILWIND, 3 kt right crosswind 18 min ago -20.22
PRIOR runway length 3800 ft +0.04

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	18 min	Nearest station CYEN (21.3 nm away)
ADSB	UNAVAILABLE		No ADS-B track history here yet
NOTAM	ERROR		NOTAM source unreachable
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?

D50 field & runways

Crosby Muni, Crosby, North Dakota. Field elevation 1953 ft. Non-towered (NON-ATCT). Magnetic variation 7.0°E on record, 7.2°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 0.075°/year west — about 1° every 13 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
13	135.1°	127.8°	matches	3,800 ft	ASPH	left
21	224.9°	217.6°	runway 22 by the rule today · 7.6° past	2,680 ft	TURF	left
3	44.9°	37.6°	runway 4 by the rule today · 7.6° past	2,680 ft	TURF	left
31	315.1°	307.8°	matches	3,800 ft	ASPH	left

Generated 11:17:35Z · auto-refreshes · JSON

D50 ☆ Crosby Muni