1D7 The Sigurd Anderson

WIND_INFERRED 80%

Runway 12 — favored by the wind (11 kt at 130° true)

Based on wind only — no traffic or ATIS to confirm. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available.

certainty: 80% evidence: WEAK no tower now

Wind 130° true at 11 kt G17 · LIFR · 40 min old · from KBTN (33.0 nm away)

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

12 81% 3705 ft · 11 kt head, 1 kt x-right

19 19% 2221 ft · 6 kt head, 9 kt x-left

1 <1% 2221 ft · 6 kt TAIL, 9 kt x-right

30 <1% 3705 ft · 11 kt TAIL, 1 kt x-left

Why — evidence behind this answer

Runway 12

WIND 11 kt headwind, 1 kt right crosswind 40 min ago +2.51
PRIOR runway length 3705 ft +0.05

Runway 19

WIND 6 kt headwind, 9 kt left crosswind 40 min ago +1.16
PRIOR runway length 2221 ft -0.05

Runway 1

WIND 6 kt TAILWIND, 9 kt right crosswind 40 min ago -9.26
PRIOR runway length 2221 ft -0.05

Runway 30

WIND 11 kt TAILWIND, 1 kt left crosswind 40 min ago -24.93
PRIOR runway length 3705 ft +0.05

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	40 min	Nearest station KBTN (33.0 nm away)
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?

1D7 field & runways

The Sigurd Anderson, Webster, South Dakota. Field elevation 1858 ft. Non-towered (NON-ATCT). Magnetic variation 7.0°E on record, 3.1°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 0.058°/year west — about 1° every 17 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
1	5.0°	1.9°	runway 36 by the rule today · 8.1° past	2,221 ft	TURF	left
12	123.1°	120.0°	matches	3,705 ft	ASPH	left
19	185.0°	181.9°	runway 18 by the rule today · 8.1° past	2,221 ft	TURF	left
30	303.1°	300.0°	matches	3,705 ft	ASPH	left

Generated 09:14:41Z · auto-refreshes · JSON

1D7 ☆ The Sigurd Anderson