Otr 90 Fire

Ada County, Idaho · Wildfire

No longer active Official numbers updated Sep 13, 2026 (about 2 hours ago)

First reported about 5 weeks ago

Metric	Last report	Now	Change
Size	0 acres Sep 13, 10:00 AM	0 acres Sep 13, 11:00 AM	—
Containment	—	—	—
Crew size	—	—	—
Money spent	—	—	—

Otr 90 Fire summary

The Otr 90 Fire is a wildfire near Ada County, Idaho. It has burned about under 1 acre. It was first reported about 5 weeks ago.

Size: under 1 acre
Containment: Not yet reported
Discovered: August 8, 2026 (first reported about 5 weeks ago)
Cause: Not reported

The size and containment above are current as of Sunday, September 13th at 10:00 a.m. CDT.

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Weather & fire-spread conditions

No Red Flag Warning. The National Weather Service hasn't flagged this area for dangerous fire-spread conditions right now.

Hot, dry, and windy weather can help a fire grow; cool, calm, or wet weather helps crews. The tags below rate each day for fire spread — green is calm, red can push a fire.

A general fire-weather guide (wind matters most, then how dry it is, then heat), not a prediction of what this fire will do.

Today

71°F · Sunny

Wind 15 to 21 mph NW · 1% chance of rain

Wind: Windy Heat: Cool Dry

Tonight

43°F · Mostly Clear

Wind 9 to 23 mph NW · 2% chance of rain

Wind: Windy Heat: Cool Dry

Monday

71°F · Sunny

Wind 9 to 13 mph NW · 0% chance of rain

Wind: Breezy Heat: Cool Dry

Monday Night

41°F · Clear

Wind 5 to 15 mph NNW · 0% chance of rain

Wind: Breezy Heat: Cool Dry

Tuesday

78°F · Sunny

Wind 6 mph E · 0% chance of rain

Wind: Calm Heat: Warm Dry

Forecast from the National Weather Service (weather.gov), pulled Sunday, September 13th at 10:04 a.m. CDT.

Could this fire move fast?

Weather isn't the only thing that changes how a fire moves. The ground matters too: how steep it is, and what's growing on it. These four numbers are for the exact spot where this fire started, not the whole fire. A big fire crosses a lot of different ground.

3° slope

Fire usually moves faster uphill than downhill. Heat and flame lean uphill, drying out the ground above the fire before it gets there.

Grass and shrub (GS1)

Low grass with shrubs about a foot tall. Fire moves at a moderate pace, with short flames.

0% tree canopy cover

The more tree cover above a fire, the easier it is for the fire to climb from the ground into the treetops. That's called a crown fire. Crown fires move faster, throw embers farther ahead of the fire, and are harder for crews to stop head-on.

3,063 ft elevation

Elevation by itself doesn't make a fire more or less dangerous. But it shapes the other three numbers here: what grows there, how dry things get, and what the weather does.

Elevation and slope from the USGS 3D Elevation Program; fuel type and canopy cover from LANDFIRE (USGS and U.S. Forest Service), pulled Sunday, September 13th at 10:05 a.m. CDT.

Who's on it

This fire is small enough that no crew size or team has been posted yet. That's normal for a fire this size — those numbers show up once a fire is big enough to need a formal report.

Where to get live updates

We show the daily official picture. For minute-by-minute updates, evacuation orders, and maps, these do it best:

→ Watch Duty: real-time fire reporting and evacuations.
→ InciWeb: the government's official fire information site.

Nearby fires to Otr 90 Fire

No other active fires are near this one right now. It's on its own.

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