KMIW Marshalltown 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 9005 minutes old — treat with caution.

certainty: — evidence: NONE no tower now

Wind 140° true at 4 kt · VFR · 9005 min old

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

13 26% 5007 ft · 4 kt head, 1 kt x-right

31 26% 5007 ft · 4 kt TAIL, 1 kt x-left

18 24% 2759 ft · 3 kt head, 3 kt x-left

36 24% 2759 ft · 3 kt TAIL, 3 kt x-right

Why — evidence behind this answer

Runway 13

PRIOR runway length 5007 ft +0.06
WIND 4 kt headwind, 1 kt right crosswind 9005 min ago +0.00

Runway 31

PRIOR runway length 5007 ft +0.06
WIND 4 kt TAILWIND, 1 kt left crosswind 9005 min ago -0.00

Runway 18

PRIOR runway length 2759 ft -0.06
WIND 3 kt headwind, 3 kt left crosswind 9005 min ago +0.00

Runway 36

PRIOR runway length 2759 ft -0.06
WIND 3 kt TAILWIND, 3 kt right crosswind 9005 min ago -0.00

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	9005 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?

KMIW field & runways

Marshalltown Muni, Marshalltown, Iowa. Field elevation 975 ft. Non-towered (NON-ATCT). Magnetic variation 1.0°E on record, 0.2°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 0.051°/year west — about 1° every 20 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	127.2°	127.4°	matches	5,007 ft	ASPH	left
18	183.5°	183.8°	matches rule gives runway 19 in ~24 yr	2,759 ft	ASPH	left
31	307.2°	307.4°	matches	5,007 ft	ASPH	left
36	3.5°	3.8°	matches rule gives runway 1 in ~24 yr	2,759 ft	ASPH	left

Generated 10:57:46Z · auto-refreshes · JSON

KMIW ☆ Marshalltown Muni