Alaska wildfires

Portage Fire

OutYukon-Koyukuk County, Alaska2025Wildfire

The Portage Fire was reported on July 7, 2025 in Yukon-Koyukuk County, Alaska and burned 1,303 acres. It was declared out on July 26, 2025. The cause is listed as natural.

Size
1,303 acres
Contained
0%
Discovered
July 7, 2025

Map

Perimeter mapped October 7, 2025 at 12:25 AM AKDT, 1,303 acres (image interpretation). Point of origin 67.047, -153.708.

Live radar at the fire

The incident

Size
1,303 acres
Containment
0%
Discovered
July 7, 2025 at 12:25 PM AKDT
Declared out
July 26, 2025 at 5:00 PM AKDT
Cause
Natural
Location
43 Miles NW from Alatna, AK
County
Yukon-Koyukuk County
State
Alaska
Protecting agency
BLM
Jurisdiction
DNR
Land ownership at origin
State
Incident management
Type 5 IC, Type 5 Incident
Primary fuel
Timber (Litter and Understory)
Incident type
Wildfire
Unique fire identifier
2025-AKTAD-000416
IRWIN identifier
D21108A3-9BB0-4D3D-A517-7EC507128B3D

Growth

Mapped area at the last perimeter of each day, from July 8, 2025 (39 acres) to October 7, 2025 (1,303 acres). The largest one-day growth was 1,128 acres, mapped July 12, 2025.

DayAcresChange
July 8, 202539
July 12, 20251,167+1,128
July 13, 20251,212+45
July 27, 20251,303+91
October 7, 20251,3030

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Incident record from the National Interagency Fire Center’s Wildland Fire Interagency Geospatial Services (WFIGS), as the incident’s managers report it; last updated October 7, 2025 at 12:25 AM AKDT. Identifier 2025-AKTAD-000416.