KDVO Gnoss Fld

PROBABLE 60%

Runway 31 — 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: NONE no tower now

Wind 320° true at 4 kt · VFR · 39 min old · from KDVO (0.2 nm away)

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

31 57% 3303 ft · 4 kt head, 1 kt x-left · right traffic

13 43% 3303 ft · 4 kt TAIL, 1 kt x-right · calm-wind rwy

Why — evidence behind this answer

Runway 31

WIND 4 kt headwind, 1 kt left crosswind 39 min ago +0.18

Runway 13

WIND 4 kt TAILWIND, 1 kt right crosswind 39 min ago -0.62
PRIOR 13 is the designated calm-wind runway +0.50

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	39 min	Nearest station KDVO (0.2 nm away)
ADSB	WARMING_UP	2258 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?

KDVO field & runways

Gnoss Fld, Novato, California. Field elevation 4 ft. Non-towered (NON-ATCT). Magnetic variation 16.0°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
13	149.8°	136.9°	runway 14 by the rule today · 6.9° past	3,303 ft	ASPH	left	calm-wind RY 13 CALM WIND RY.
31	329.8°	316.9°	runway 32 by the rule today · 6.9° past	3,303 ft	ASPH	right

Generated 09:14:06Z · auto-refreshes · JSON

KDVO ☆ Gnoss Fld