KMOD Modesto City-County-Harry Sham Fld

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. No ADS-B traffic data available.

certainty: — evidence: NONE Class D

Wind 110° true at 3 kt · VFR · 48 min old

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

10L 31% 5904 ft · 3 kt head, 1 kt x-left

10R 28% 3464 ft · 3 kt head, 1 kt x-left · right traffic

28R 21% 5904 ft · 3 kt TAIL, 1 kt x-right · right traffic

28L 19% 3464 ft · 3 kt TAIL, 1 kt x-right

Why — evidence behind this answer

Runway 10L

WIND 3 kt headwind, 1 kt left crosswind 48 min ago +0.10
PRIOR runway length 5904 ft +0.05

Runway 10R

WIND 3 kt headwind, 1 kt left crosswind 48 min ago +0.10
PRIOR runway length 3464 ft -0.05

Runway 28R

WIND 3 kt TAILWIND, 1 kt right crosswind 48 min ago -0.28
PRIOR runway length 5904 ft +0.05

Runway 28L

WIND 3 kt TAILWIND, 1 kt right crosswind 48 min ago -0.28
PRIOR runway length 3464 ft -0.05

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	48 min
ADSB	UNAVAILABLE		No ADS-B track history here yet
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (No ADS-B track history here yet)

Was this right?

KMOD field & runways

Modesto City-County-Harry Sham Fld, Modesto, California. Field elevation 99 ft. Class D airspace. Towered. Magnetic variation 16.0°E on record, 12.6°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
10L	124.2°	111.7°	runway 11 by the rule today · 11.7° past	5,904 ft	ASPH	left
10R	124.2°	111.7°	runway 11 by the rule today · 11.7° past	3,464 ft	ASPH	right
28L	304.2°	291.7°	runway 29 by the rule today · 11.7° past	3,464 ft	ASPH	left
28R	304.2°	291.7°	runway 29 by the rule today · 11.7° past	5,904 ft	ASPH	right	ILS

Generated 10:41:10Z · auto-refreshes · JSON

KMOD ☆ Modesto City-County-Harry Sham Fld