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Wildfire perimeter

FYU W 46

Burned 73,073 acres (296 km², 114.2 mi²) in AK during 1975.

IRWIN unkn-50000-917… AFS AK fire history 1975 fires
Acres burned
73,073
296 km²
Year
1975
FIRE_YEAR field
State
AK
POOState region
Reporting agency
AFS
NIFC source
01 Perimeter shape

The fire's footprint

Simplified polygon (≤0.001° tolerance). 2 rings. Centroid 66.726°, -147.235°.

NW: 66.801°N, 147.645°W SE: 66.650°N, 146.824°W

About this perimeter

Sourced from the NIFC InterAgency Fire Perimeter History ArcGIS service. Polygon geometry has been simplified to ≤0.001° tolerance for storage; original full-fidelity perimeters are at fire.nifc.gov. We track all 75,044 documented historical perimeters; this detail view renders the top 1,000 by acreage. The shape above is rendered fully server-side with no JavaScript or external mapping library — it preserves the polygon's shape but not its precise geographic placement on a basemap.