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Wildfire perimeter

BIGHORN

Burned 119,635 acres (484 km², 186.9 mi²) in AZ during 2020.

IRWIN {CD3AC2F4-39F6-4… USFS AZ fire history 2020 fires
Acres burned
119,635
484 km²
Year
2020
FIRE_YEAR field
State
AZ
POOState region
Reporting agency
USFS
NIFC source
01 Perimeter shape

The fire's footprint

Simplified polygon (≤0.001° tolerance). 39 rings. Centroid 32.443°, -110.724°.

NW: 32.571°N, 110.937°W SE: 32.314°N, 110.511°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.