KSPF Black Hills-Clyde Ice Fld

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 4518 minutes old — treat with caution. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now

Wind calm · VFR · 4518 min old

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

13 19% 6401 ft · right traffic

31 19% 6401 ft

26 17% 4003 ft

8 17% 4003 ft

22 15% 1995 ft

4 15% 1995 ft

Why — evidence behind this answer

Runway 13

PRIOR runway length 6401 ft +0.11

Runway 31

PRIOR runway length 6401 ft +0.11

Runway 22

PRIOR runway length 1995 ft -0.12

Runway 4

PRIOR runway length 1995 ft -0.12

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	4518 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?

KSPF field & runways

Black Hills-Clyde Ice Fld, Spearfish, South Dakota. Field elevation 3933 ft. Non-towered (NON-ATCT). Magnetic variation 11.0°E on record, 7.2°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 0.079°/year west — about 1° every 13 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	135.3°	128.0°	matches	6,401 ft	ASPH	right
22	225.3°	218.0°	matches	1,995 ft	TURF	left
26	271.5°	264.3°	matches rule gives runway 27 in ~9 yr	4,003 ft	TURF	left
31	315.3°	308.0°	matches	6,401 ft	ASPH	left
4	45.3°	38.0°	matches	1,995 ft	TURF	left
8	91.5°	84.3°	matches rule gives runway 9 in ~9 yr	4,003 ft	TURF	left

Generated 09:12:31Z · auto-refreshes · JSON

KSPF ☆ Black Hills-Clyde Ice Fld