KACK Nantucket Meml

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. ADS-B tracking just started here — traffic history is still building.

certainty: — evidence: NONE Class D

Wind 260° true at 3 kt · VFR · 47 min old

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

24 29% 6303 ft · 2 kt head, 2 kt x-right

33 27% 4500 ft · 2 kt head, 2 kt x-left

15 22% 4500 ft · 2 kt TAIL, 2 kt x-right

6 22% 6303 ft · 2 kt TAIL, 2 kt x-left

Active NOTAMs affecting runways

LIGHTING RWY 15 until 03-31 23:59Z

RWY 15 RWY END ID LGT U/S

Why — evidence behind this answer

Runway 24

WIND 2 kt headwind, 2 kt right crosswind 47 min ago +0.08
PRIOR runway length 6303 ft +0.03

Runway 33

WIND 2 kt headwind, 2 kt left crosswind 47 min ago +0.05
PRIOR runway length 4500 ft -0.03

Runway 15

WIND 2 kt TAILWIND, 2 kt right crosswind 47 min ago -0.13
PRIOR runway length 4500 ft -0.03

Runway 6

WIND 2 kt TAILWIND, 2 kt left crosswind 47 min ago -0.22
PRIOR runway length 6303 ft +0.03

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	47 min
ADSB	WARMING_UP	2690 min	Only 0 min of track history so far
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (Only 0 min of track history so far)

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KACK field & runways

Nantucket Meml, Nantucket, Massachusetts. Field elevation 47 ft. Class D airspace. Towered. Magnetic variation 14.0°W on record, 14.1°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 0.068°/year east — 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
15	135.1°	149.2°	matches	4,500 ft	ASPH	left
24	224.9°	239.0°	matches rule gives runway 23 in ~58 yr	6,303 ft	ASPH	left	ILS
33	315.1°	329.2°	matches	4,500 ft	ASPH	left
6	44.9°	59.0°	matches rule gives runway 5 in ~58 yr	6,303 ft	ASPH	left	ILS

Generated 08:39:43Z · auto-refreshes · JSON

KACK ☆ Nantucket Meml