21ND Rosenau

WIND_INFERRED 90%

Runway 8 — favored by the wind (10 kt at 100° 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: NONE no tower now

Wind 100° true at 10 kt G15 · VFR · 70 min old · from KD09 (22.9 nm away)

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

8 99% 2500 ft · 10 kt head, 2 kt x-right

26 <1% 2500 ft · 10 kt TAIL, 2 kt x-left · right traffic

Why — evidence behind this answer

Runway 8

WIND 10 kt headwind, 2 kt right crosswind 70 min ago +1.75

Runway 26

WIND 10 kt TAILWIND, 2 kt left crosswind 70 min ago -15.63

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	70 min	Nearest station KD09 (22.9 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?

21ND field & runways

Rosenau, Upham, North Dakota. Field elevation 1450 ft. Non-towered (NON-ATCT). Private use. Magnetic variation 10.0°E on record, 5.5°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 0.064°/year west — about 1° every 16 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
26	270.1°	264.6°	matches rule gives runway 27 in ~6 yr	2,500 ft	TURF	right
8	90.1°	84.6°	matches rule gives runway 9 in ~6 yr	2,500 ft	TURF

Generated 09:45:03Z · auto-refreshes · JSON

21ND ☆ Rosenau