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Wildfire perimeter

TRIPLET

Burned 86,163 acres (349 km², 134.6 mi²) in AK during 1977.

IRWIN unkn-50000-867… AFS AK fire history 1977 fires
Acres burned
86,163
349 km²
Year
1977
FIRE_YEAR field
State
AK
POOState region
Reporting agency
AFS
NIFC source
01 Perimeter shape

The fire's footprint

Simplified polygon (≤0.001° tolerance). 1 ring. Centroid 66.332°, -158.210°.

NW: 66.445°N, 158.506°W SE: 66.219°N, 157.914°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.