Fire Forces Evacuations; Cause Under Investigation
Officials have not determined the cause of a fast-growing fire, with initial reports indicating tires on a semi-truck were on fire and flames spread to nearby vegetation.
2 reports on this incident · first at Aug 14, 2026, 8:10 p.m. ET
Earlier reports
Aug 14, 2026, 8:10 p.m. ETFirst report
Fielder Mountain Fire in Oregon Grows to Roughly 550 Acres Overnight
The Fielder Mountain Fire in Oregon had burned roughly 550 acres by Friday morning, August 14, according to reporting by Jefferson Public Radio (ijpr.org).
The outlet reported that the fire grew rapidly overnight, spreading through grass along Interstate 5, and that heavy winds and steep terrain were fueling continued growth.
The official cause has not been determined and remains under investigation. Jefferson Public Radio reported that initial reports indicated tires on a semi-truck were on fire and that flames spread to nearby vegetation; that account has not been established as the cause.
The situation is developing and figures may change.
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Sources
Revision history
- Version 323 Aug 2026, 08:53current
Updated to reflect conflicting reports on fire name, state, size, containment, and behavior, and to attribute all figures to their sources.
- Version 217 Aug 2026, 06:55
Removed the "15% contained" figure and stated instead that no containment figure has been reported, noting that absent is not zero. Removed both acreage figures (roughly 550 acres; 131 acres) and stated that the fire's size has not been established. Dropped the bare weekday "Sunday" (and the "Friday morning" reference, which was attached to the removed acreage), keeping the reported 1:30 p.m. discovery time and stating that no calendar date appears in the reporting rather than inferring one. Kept the sourced conflict in fire behavior, naming both outlets, and kept the attribution for cause.
- Version 115 Aug 2026, 00:21
First published.
- Version 115 Aug 2026, 00:10current
First published.
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