runwayinuse

KGTG Grantsburg Muni

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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. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now

N 12 30 23 5

Wind calm · VFR · 47 min old · from KCBG (29.0 nm away)

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12 25% 2999 ft
23 25% 3280 ft
30 25% 2999 ft
5 25% 3280 ft
Why — evidence behind this answer

Sources consulted

sourcestatus agenote
D_ATISUNAVAILABLE No D-ATIS at this field
METAROK 47 min Nearest station KCBG (29.0 nm away)
ADSBUNAVAILABLE No ADS-B track history here yet
NOTAMOK
CIFPNOT_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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KGTG field & runways

Grantsburg Muni, Grantsburg, Wisconsin. Field elevation 927 ft. Non-towered (NON-ATCT). Magnetic variation 0.0°W on record, 0.7°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 0.034°/year west — about 1° every 29 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.
RunwayTrueMagnetic Number LengthSurfacePattern Notes
12 120.8° 121.5° matches 2,999 ft ASPH left
23 235.6° 236.3° runway 24 by the rule today · 6.3° past 3,280 ft TURF
30 300.8° 301.5° matches 2,999 ft ASPH left
5 55.6° 56.3° runway 6 by the rule today · 6.3° past 3,280 ft TURF

Generated 08:41:44Z · auto-refreshes · JSON