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Knoll Fire

Unit Information

Willamette National Forest
U.S. Forest Service
Springfield, OR 97477

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Incident Contact

McKenzie River Ranger District
Phone: 541-822-3381
Hours: M-F 8 am - 4:30 pm

Highlighted Activity

08/16/2021 Last Update for Knoll Fire
This is the last update for the Knoll Fire, today, August 16, 2021. The Northwest Incident Management Team 3 transferred command of the fire back to the local unit. The fire remains in monitor and...
Announcement - 08/16/2021
Knoll Fire Perimeter Map 8/15/21Image options: [ Full Size ]

Basic Information

Current as of
Incident TypeWildfire
Date of OriginThursday August 05th, 2021 approx. 10:30 PM
Location7 Miles NE of McKenzie Bridge, OR
Incident CommanderRandy Johnson, Pacific Northwest Team 3
Coordinates44.246 latitude, -122.055 longitude

Current Situation

Total Personnel46
Size544 Acres
Percent of Perimeter Contained50%
Estimated Containment DateWednesday August 25th, 2021 approx. 12:00 AM
Fuels Involved

Timber (Litter and Understory)

Closed Timber Litter

Light Logging Slash

Conifer with abundant brush, small trees and dead/down logs, making it difficult to walk through. Will burn readily with abundant torching and spotting when dry; it doesn't need much wind to spread efficiently, primarily through torching and spotting. Lichen will contribute to torching and spotting as relative humidity (Rh) falls below 40%

Significant Events

Minimal flanking, torching, spotting.

Primarily cleaning up unburned fuels within the line. Torching likely, spotting possible. Wide natural

barriers and favorable containment features reduce the likelihood of a spot establishing outside of

containment lines.


Planned Actions

Holding and patrolling all flanks. Patrolling Hwy 126 to the east of Mckenzie River for any potential spotting.

Projected Incident Activity

12 hours: Interior torching possible with spotting possible.

24 hours: Interior torching possible with spotting possible.


This will be the last ICS-209 from PNW for this incident. Command will be returned to the local unit at 0600 on


Current Weather

Weather Concerns

Slightly stronger winds have begun to mix down to the surface,increasing ventilation and allowing for smoke to flush out more easily. The earlier clearing of smoke permitted increased air

resource operations, and also led to increased solar insolation. As expected, this led to temperatures running a few degrees warmer(highs 85-90) and afternoon humidity being slightly warmer compared to Saturday, despite the weakening high pressure across

the Pacific Northwest. Prevailing winds remained out of the west through the day,

similar to previous days.

Through Tuesday, increasing onshore flow with bring cooler marine air to the area, resulting in very high humidity recoveries during the

overnight periods, and moderate daytime humidity values. Some patchy drizzle is possible Monday night, but little no accumulations

are expected. Temperatures will take a dive on Tuesday, with highs lowering to the 60s and low 70s. Slightly warmer and drier conditions expected beginning Wednesday.