KOLZ Oelwein Muni

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. Weather observation is 458 minutes old — treat with caution.

certainty: — evidence: NONE no tower now

Wind 070° true at 5 kt · VFR · 458 min old

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

13 27% 4000 ft · 2 kt head, 4 kt x-left

31 27% 4000 ft · 2 kt TAIL, 4 kt x-right

36 23% 1822 ft · 2 kt head, 5 kt x-right

18 23% 1822 ft · 2 kt TAIL, 5 kt x-left

Why — evidence behind this answer

Runway 13

PRIOR runway length 4000 ft +0.08
WIND 2 kt headwind, 5 kt left crosswind 458 min ago +0.00

Runway 31

PRIOR runway length 4000 ft +0.08
WIND 2 kt TAILWIND, 5 kt right crosswind 458 min ago -0.01

Runway 36

PRIOR runway length 1822 ft -0.08
WIND 2 kt headwind, 5 kt right crosswind 458 min ago +0.00

Runway 18

PRIOR runway length 1822 ft -0.08
WIND 2 kt TAILWIND, 5 kt left crosswind 458 min ago -0.01

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	458 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?

KOLZ field & runways

Oelwein Muni, Oelwein, Iowa. Field elevation 1076 ft. Non-towered (NON-ATCT). Magnetic variation 2.0°E on record, 1.0°W 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 0.045°/year west — about 1° every 22 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
13	134.6°	135.6°	runway 14 by the rule today · 5.6° past	4,000 ft	CONC	left
18	182.2°	183.1°	matches rule gives runway 19 in ~41 yr	1,822 ft	TURF	left
31	314.6°	315.6°	runway 32 by the rule today · 5.6° past	4,000 ft	CONC
36	2.1°	3.1°	matches rule gives runway 1 in ~41 yr	1,822 ft	TURF	left

Generated 09:13:28Z · auto-refreshes · JSON

KOLZ ☆ Oelwein Muni