KBIS Bismarck Muni

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. Weather observation is 1668 minutes old — treat with caution. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now Class D

Wind calm · VFR · 1668 min old

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13 26% 8794 ft

31 26% 8794 ft

21 24% 6600 ft

3 24% 6600 ft

Active NOTAMs affecting runways

LIGHTING RWY 21 until 11-01 23:00Z

RWY 21 PAPI U/S

LIGHTING RWY 31 until 11-01 23:00Z

RWY 31 PAPI U/S

Why — evidence behind this answer

Runway 13

PRIOR runway length 8794 ft +0.03

Runway 31

PRIOR runway length 8794 ft +0.03

Runway 21

PRIOR runway length 6600 ft -0.03

Runway 3

PRIOR runway length 6600 ft -0.03

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	1668 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)

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KBIS field & runways

Bismarck Muni, Bismarck, North Dakota. Field elevation 1661 ft. Class D airspace. Non-towered (ATCT-TRACON). Magnetic variation 7.0°E on record, 5.4°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 0.067°/year west — about 1° every 15 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
13	137.7°	132.3°	matches rule gives runway 14 in ~40 yr	8,794 ft	ASPH-CONC	left	ILS
21	218.9°	213.5°	matches rule gives runway 22 in ~22 yr	6,600 ft	ASPH
3	39.0°	33.5°	matches rule gives runway 4 in ~22 yr	6,600 ft	ASPH
31	317.7°	312.3°	matches rule gives runway 32 in ~40 yr	8,794 ft	ASPH-CONC	left	ILS

Generated 08:40:07Z · auto-refreshes · JSON

KBIS ☆ Bismarck Muni