L36 Rio Linda

PROBABLE 60%

Runway 35 — wind slightly favors it, low confidence

Based mostly on wind; no traffic or ATIS to confirm. 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: 60% evidence: WEAK no tower now

Wind 090° true at 10 kt · VFR · 18 min old · from KAUN (23.8 nm away)

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35 59% 2625 ft · 1 kt head, 10 kt x-right

17 41% 2625 ft · 1 kt TAIL, 10 kt x-left · right traffic

Why — evidence behind this answer

Runway 35

WIND 1 kt headwind, 10 kt right crosswind 18 min ago -0.17

Runway 17

WIND 1 kt TAILWIND, 10 kt left crosswind 18 min ago -0.54

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	18 min	Nearest station KAUN (23.8 nm away)
ADSB	WARMING_UP	4986 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?

L36 field & runways

Rio Linda, Rio Linda, California. Field elevation 46 ft. Non-towered (NON-ATCT). Magnetic variation 16.0°E on record, 12.8°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 0.092°/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
17	184.0°	171.1°	matches rule gives runway 18 in ~42 yr	2,625 ft	ASPH	right
35	4.0°	351.1°	matches rule gives runway 36 in ~42 yr	2,625 ft	ASPH	left

Generated 11:13:11Z · auto-refreshes · JSON

L36 ☆ Rio Linda