KGFZ Greenfield Muni

PROBABLE 60%

Runway 25 — 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. No ADS-B traffic data available.

certainty: 60% evidence: WEAK no tower now

Wind 200° true at 9 kt · VFR · 20 min old · from KAIO (27.5 nm away)

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

25 50% 3400 ft · 5 kt head, 8 kt x-left · calm-wind rwy

14 49% 2500 ft · 5 kt head, 8 kt x-right

7 <1% 3400 ft · 5 kt TAIL, 8 kt x-right

32 <1% 2500 ft · 5 kt TAIL, 8 kt x-left

Why — evidence behind this answer

Runway 25

WIND 5 kt headwind, 8 kt left crosswind 20 min ago +0.75
PRIOR runway length 3400 ft +0.03

Runway 14

WIND 5 kt headwind, 8 kt right crosswind 20 min ago +0.79
PRIOR runway length 2500 ft -0.03

Runway 7

WIND 5 kt TAILWIND, 8 kt right crosswind 20 min ago -4.03
PRIOR runway length 3400 ft +0.03

Runway 32

WIND 5 kt TAILWIND, 8 kt left crosswind 20 min ago -4.29
PRIOR runway length 2500 ft -0.03

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	20 min	Nearest station KAIO (27.5 nm away)
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)

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KGFZ field & runways

Greenfield Muni, Greenfield, Iowa. Field elevation 1364 ft. Non-towered (NON-ATCT). Magnetic variation 4.0°E on record, 0.9°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 0.059°/year west — about 1° every 17 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
14	142.5°	141.6°	matches rule gives runway 15 in ~58 yr	2,500 ft	CONC	left
25	258.9°	258.0°	runway 26 by the rule today · 8.0° past	3,400 ft	CONC		calm-wind RY 25 IS CALM WIND RY.
32	322.5°	321.6°	matches rule gives runway 33 in ~58 yr	2,500 ft	CONC	left
7	78.9°	78.0°	runway 8 by the rule today · 8.0° past	3,400 ft	CONC

Generated 11:14:42Z · auto-refreshes · JSON

KGFZ ☆ Greenfield Muni