KAPC Napa County

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 320° true at 4 kt · VFR · 37 min old · from KDVO (13.6 nm away)

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

1L 20% 5930 ft · 2 kt head, 4 kt x-left

24 20% 5008 ft · 2 kt head, 4 kt x-right

1R 17% 2510 ft · 2 kt head, 4 kt x-left · right traffic

19R 15% 5930 ft · 2 kt TAIL, 4 kt x-right · right traffic

6 15% 5008 ft · 2 kt TAIL, 4 kt x-left

19L 13% 2510 ft · 2 kt TAIL, 4 kt x-right

Active NOTAMs affecting runways

APCH OTS RWY 6 until 10-23 12:02Z

NAPA COUNTY, NAPA, CA. VOR RWY 6, AMDT 15... DME REQUIRED EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAU VOR/DME OUT OF SERVICE.

Why — evidence behind this answer

Runway 1L

PRIOR runway length 5930 ft +0.07
WIND 2 kt headwind, 3 kt left crosswind 37 min ago +0.07

Runway 24

WIND 2 kt headwind, 4 kt right crosswind 37 min ago +0.06
PRIOR runway length 5008 ft +0.04

Runway 1R

PRIOR runway length 2510 ft -0.10
WIND 2 kt headwind, 3 kt left crosswind 37 min ago +0.07

Runway 19R

WIND 2 kt TAILWIND, 3 kt right crosswind 37 min ago -0.22
PRIOR runway length 5930 ft +0.07

Runway 6

WIND 2 kt TAILWIND, 4 kt left crosswind 37 min ago -0.20
PRIOR runway length 5008 ft +0.04

Runway 19L

WIND 2 kt TAILWIND, 3 kt right crosswind 37 min ago -0.22
PRIOR runway length 2510 ft -0.10

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	37 min	Nearest station KDVO (13.6 nm away)
ADSB	WARMING_UP	2257 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)

Was this right?

KAPC field & runways

Napa County, Napa, California. Field elevation 36 ft. Class D airspace. Towered. Magnetic variation 15.0°E on record, 12.9°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 0.091°/year west — about 1° every 11 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
19L	200.7°	187.8°	matches	2,510 ft	ASPH	left
19R	200.7°	187.8°	matches	5,930 ft	ASPH	right
1L	20.7°	7.8°	matches	5,930 ft	ASPH	left	ILS
1R	20.7°	7.8°	matches	2,510 ft	ASPH	right
24	256.7°	243.8°	matches rule gives runway 25 in ~13 yr	5,008 ft	CONC	left
6	76.7°	63.8°	matches rule gives runway 7 in ~13 yr	5,008 ft	CONC	left

Generated 09:12:19Z · auto-refreshes · JSON

KAPC ☆ Napa County