Second Flat Fire, Riley, Oregon

True view Fire view

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True view (left): as the eye sees it.
Fire view (right): infrared (SWIR), sees through smoke and brings out the heat.

🟢 green = vegetation
🟤 brown = already burned
🟠 orange = fire right now

Drag to compare: normal photo on the left, heat brought out on the right.

Green: vegetationBrown: already burnedOrange: fire right nowSentinel-2 · Copernicus

Key facts

Source: NIFC

Location6 miles northeast of Riley, OR

CauseNatural

What's burningTimber (Litter and Understory)

How it's behavingMinimal, Single Tree TorchingSmoldering — Burning without flame, in the ground or in roots. Can flare up days later.

ComplexityType 1 IncidentOfficial scale from 5 to 1: a Type 1 is the most complex in the country.

JurisdictionBLM · Federal land

Cost so far$21.6 million

Glossary: what each term means

Minimal

Barely moving. Low, thin smoke.

Smoldering

Burning without flame, in the ground or in roots. Can flare up days later.

Creeping

Moves slowly, hugging the ground.

Moderate

Spreads with low, steady flames.

Active

Spreading evenly and steadily, with visible flame.

Extreme

Fast and unpredictable.

Running

Runs along the ground much faster than a person walks.

Flanking

Grows along the sides, not head-on.

Backing

Moves against the wind or downhill, which makes it slower.

Crowning

Climbs into the treetops and jumps crown to crown. It can't be attacked from the ground.

Short Crown Runs

Climbs into the crowns in bursts and drops back down.

Torching

Whole trees flaring up like torches.

Isolated Torching

Single scattered trees flaring up whole, like torches.

Group Torching

Whole clumps of trees flaring at once.

Spotting

Wind carries embers through the air and starts new fires ahead of the front: that is how a fire jumps a road or a firebreak.

Wind Driven Runs

The wind pushes it in long runs in one direction.

The ones marked ● are the behaviors that make a fire harder to stop. They are not a warning or an instruction: they are the description written by the agency in charge. For decisions, always follow your emergency services.

The story so far

Burning for 31 days with an average daily expansion of approximately 3,415 acres, the active Second Flat Fire near Riley, Oregon, has scorched 105,854 acres of federal land in Harney County while reaching 99 percent containment. Originating from a natural cause on July 24, 2026, the incident is currently managed by a Type 3 Team under a Type 1 Incident complexity, utilizing 77 personnel with suppression costs reaching $21,577,379.

Fire behavior on the Bureau of Land Management territory is characterized as minimal and smoldering with occasional single tree torching within timber, litter, and understory fuels. This event unfolds during the region's typical fire season, which runs from June to October. Nationally, the broader context shows 2,993,191 hectares burned so far in 2026, tracking 45 percent below the two-decade average.

In context

This wildfire has been burning in Oregon for 94 days. So far it has affected roughly 105,854 acres — about 428 km². At 99% containment, the fire is nearly under control.

In the Northern Hemisphere, wildfire activity usually peaks during the warm, dry months — roughly May through October.