C37 Brodhead

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. ADS-B tracking just started here — traffic history is still building. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now

Wind calm · VFR · 47 min old · from KMSN (32.8 nm away)

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27 18% 2440 ft

9 18% 2440 ft

21 16% 1500 ft

3 16% 1500 ft

15 16% 1380 ft

33 16% 1380 ft

Why — evidence behind this answer

Runway 27

PRIOR runway length 2440 ft +0.07

Runway 9

PRIOR runway length 2440 ft +0.07

Runway 21

PRIOR runway length 1500 ft -0.03

Runway 3

PRIOR runway length 1500 ft -0.03

Runway 15

PRIOR runway length 1380 ft -0.04

Runway 33

PRIOR runway length 1380 ft -0.04

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	47 min	Nearest station KMSN (32.8 nm away)
ADSB	WARMING_UP	452 min	Only 0 min of track history so far
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (Only 0 min of track history so far)

Was this right?

C37 field & runways

Brodhead, Brodhead, Wisconsin. Field elevation 792 ft. Non-towered (NON-ATCT). Magnetic variation 0.0°W on record, 3.0°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 0.034°/year west — about 1° every 29 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
15	148.6°	151.5°	matches	1,380 ft	TURF	left
21	212.3°	215.3°	runway 22 by the rule today · 5.3° past	1,500 ft	TURF	left
27	269.2°	272.1°	matches	2,440 ft	TURF	left
3	32.3°	35.3°	runway 4 by the rule today · 5.3° past	1,500 ft	TURF	left
33	328.6°	331.5°	matches	1,380 ft	TURF	left
9	89.2°	92.1°	matches	2,440 ft	TURF	left

Generated 08:40:25Z · auto-refreshes · JSON

C37 ☆ Brodhead