KRHV Reid-Hillview Of Santa Clara County

31R

PROBABLE 60%

Runway 31R — local convention slightly favors it

No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. Wind calm — no directional preference.

certainty: 60% evidence: NONE Class D

Wind calm · VFR · 32 min old · from KLVK (21.6 nm away)

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

31R 59% 3100 ft · right traffic · calm-wind rwy

13R 22% 3099 ft · right traffic

31L 10% 3099 ft

13L 10% 3100 ft

Why — evidence behind this answer

Runway 31R

PRIOR 31R is the designated calm-wind runway +0.50
PRIOR 31R used 61% of the time in this wind bin (n=165) +0.42

Runway 13R

PRIOR 13R used 2% of the time in this wind bin (n=165) -0.09

Runway 31L

PRIOR 31L used 17% of the time in this wind bin (n=165) -0.84

Runway 13L

PRIOR 13L used 20% of the time in this wind bin (n=165) -0.91

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	32 min	Nearest station KLVK (21.6 nm away)
ADSB	OK	3 min	MODERATE
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour.

Was this right?

KRHV field & runways

Reid-Hillview Of Santa Clara County, San Jose, California. Field elevation 135 ft. Class D airspace. Towered. Magnetic variation 16.0°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 0.088°/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
13L	143.0°	130.4°	matches rule gives runway 14 in ~53 yr	3,100 ft	ASPH	left
13R	143.0°	130.3°	matches rule gives runway 14 in ~53 yr	3,099 ft	ASPH	right
31L	323.0°	310.3°	matches rule gives runway 32 in ~53 yr	3,099 ft	ASPH	left
31R	323.0°	310.4°	matches rule gives runway 32 in ~53 yr	3,100 ft	ASPH	right	calm-wind RY 31R CALM WIND RY WHEN ATCT CLSD.

What KRHV usually does

Of 5,669 operations this service has observed at KRHV since 2026-08-25:

31R 54% 3079 ops
31L 29% 1646 ops
13L 14% 780 ops
13R 3% 164 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 10:24:49Z · auto-refreshes · JSON

KRHV ☆ Reid-Hillview Of Santa Clara County