KMSL Northwest Alabama Rgnl

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. Weather observation is 10068 minutes old — treat with caution. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now Class E

Wind calm · VFR · 10068 min old

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30 37% 6694 ft · calm-wind rwy

12 22% 6694 ft

18 20% 4000 ft

36 20% 4000 ft

Active NOTAMs affecting runways

LIGHTING RWY 30 until 12-31 20:00Z

RWY 30 ALS U/S

Why — evidence behind this answer

Runway 30

PRIOR 30 is the designated calm-wind runway +0.50
PRIOR runway length 6694 ft +0.05

Runway 12

PRIOR runway length 6694 ft +0.05

Runway 18

PRIOR runway length 4000 ft -0.05

Runway 36

PRIOR runway length 4000 ft -0.05

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	10068 min
ADSB	WARMING_UP	3245 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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KMSL field & runways

Northwest Alabama Rgnl, Muscle Shoals, Alabama. Field elevation 550 ft. Class E airspace. Non-towered (NON-ATCT). Magnetic variation 3.0°W on record, 3.6°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 0.062°/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
12	114.2°	117.8°	matches	6,694 ft	ASPH	left
18	181.4°	184.9°	matches rule gives runway 19 in ~1 yr	4,000 ft	ASPH	left
30	294.2°	297.8°	matches	6,694 ft	ASPH	left	ILS calm-wind CALM WIND RWY.
36	1.4°	4.9°	matches rule gives runway 1 in ~1 yr	4,000 ft	ASPH	left

Generated 08:40:55Z · auto-refreshes · JSON

KMSL ☆ Northwest Alabama Rgnl