C83 Byron

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.

certainty: — evidence: NONE no tower now

Wind 320° true at 3 kt · VFR · 51 min old · from KCCR (22.5 nm away)

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

30 42% 4500 ft · 3 kt head, 0 kt x-right · right traffic · calm-wind rwy

23 21% 3000 ft · 1 kt head, 3 kt x-right

5 20% 3000 ft · 1 kt TAIL, 3 kt x-left · right traffic

12 17% 4500 ft · 3 kt TAIL, 0 kt x-left

Active NOTAMs affecting runways

LIGHTING RWY 30 until 04-06 23:59Z

RWY 30 RWY END ID LGT U/S

Why — evidence behind this answer

Runway 30

PRIOR 30 is the designated calm-wind runway +0.50
WIND 3 kt headwind, 0 kt right crosswind 51 min ago +0.10
PRIOR runway length 4500 ft +0.04

Runway 23

PRIOR runway length 3000 ft -0.04
WIND 1 kt headwind, 3 kt right crosswind 51 min ago +0.01

Runway 5

WIND 1 kt TAILWIND, 3 kt left crosswind 51 min ago -0.05
PRIOR runway length 3000 ft -0.04

Runway 12

WIND 3 kt TAILWIND, 0 kt left crosswind 51 min ago -0.28
PRIOR runway length 4500 ft +0.04

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	51 min	Nearest station KCCR (22.5 nm away)
ADSB	OK	2 min	MODERATE
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour.

Was this right?

C83 field & runways

Byron, Byron, California. Field elevation 78 ft. Non-towered (NON-ATCT). Magnetic variation 15.0°E on record, 12.7°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 0.09°/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
12	135.4°	122.7°	matches rule gives runway 13 in ~26 yr	4,500 ft	ASPH
23	243.1°	230.4°	matches rule gives runway 24 in ~52 yr	3,000 ft	ASPH
30	315.4°	302.7°	matches rule gives runway 31 in ~26 yr	4,500 ft	ASPH	right	calm-wind RY 30 CALM WIND RY.
5	63.1°	50.4°	matches rule gives runway 6 in ~52 yr	3,000 ft	ASPH	right

What C83 usually does

Of 707 operations this service has observed at C83 since 2026-08-25:

30 61% 428 ops
23 32% 223 ops
12 6% 39 ops
5 2% 17 ops

Observed by this service only — not an FAA statistic, and biased toward the hours and days it has been watching. It is shown because it is the same history the engine learns its local-convention prior from.

Generated 09:43:49Z · auto-refreshes · JSON

C83 ☆ Byron