KEFW Jefferson 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. No weather observation available.

certainty: — evidence: NONE no tower now

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32 38% 4100 ft · calm-wind rwy

14 23% 4100 ft

18 19% 1696 ft

36 19% 1696 ft

Why — evidence behind this answer

Runway 32

PRIOR 32 is the designated calm-wind runway +0.50
PRIOR runway length 4100 ft +0.09

Runway 14

PRIOR runway length 4100 ft +0.09

Runway 18

PRIOR runway length 1696 ft -0.09

Runway 36

PRIOR runway length 1696 ft -0.09

Sources consulted

source	status	note
D_ATIS	UNAVAILABLE	No D-ATIS at this field
METAR	UNAVAILABLE	No weather observation found
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?

KEFW field & runways

Jefferson Muni, Jefferson, Iowa. Field elevation 1047 ft. Non-towered (NON-ATCT). Magnetic variation 3.0°E on record, 0.8°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 0.056°/year west — about 1° every 18 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	142.9°	142.1°	matches rule gives runway 15 in ~51 yr	4,100 ft	CONC	left
18	191.9°	191.1°	runway 19 by the rule today · 11.1° past	1,696 ft	TURF	left
32	322.9°	322.1°	matches rule gives runway 33 in ~51 yr	4,100 ft	CONC	left	calm-wind RY 32 IS CALM WIND RY.
36	11.9°	11.1°	runway 1 by the rule today · 11.1° past	1,696 ft	TURF	left

Generated 08:41:36Z · auto-refreshes · JSON

KEFW ☆ Jefferson Muni