Weiser Knoll Fire

Fremont County, Wyoming · Wildfire

No longer active Official numbers updated Aug 17, 2026 (23 days ago)

First reported about 4 weeks ago

Metric	Last report	Now	Change
Size	16,531 acres Aug 14, 10:01 AM	15,817 acres Sep 9, 11:00 AM −714 acres was 16,531 acres · Aug 14, 10:01 AM	−714 acres in 26 days
Containment	51% Aug 13, 2:01 PM	95% Sep 9, 11:00 AM +44 percent was 51% · Aug 13, 2:01 PM	+44 percent in 27 days
Crew size	71 Aug 14, 4:01 PM	69 Sep 9, 11:00 AM −2 was 71 · Aug 14, 4:01 PM	−2 in 26 days
Money spent	$750,000 Aug 12, 4:00 PM	$3.0M Sep 9, 11:00 AM +$2.3M was $750,000 · Aug 12, 4:00 PM	+$2.3M in 28 days

Weiser Knoll Fire summary

The Weiser Knoll Fire is a wildfire near Fremont County, Wyoming. It has burned about 15,817 acres (about 12,000 football fields). Crews have boxed in 95% of its edge; the other 5% isn't contained yet. It was first reported about 4 weeks ago. About 69 people are on it, run by a Type 4 IC.

Size: 15,817 acres
Containment: 95%
Discovered: August 9, 2026 (first reported about 4 weeks ago)
Cause: Not reported

The size and containment above are current as of Tuesday, August 18th at 2:01 p.m. CDT.

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.

This Afternoon

76°F · Scattered Showers And Thunderstorms

Wind 7 to 12 mph SW · 42% chance of rain

Wind: Breezy Heat: Warm Some rain

Tonight

55°F · Isolated Showers And Thunderstorms then Partly Cloudy

Wind 5 to 12 mph SW · 24% chance of rain

Wind: Breezy Heat: Cool Some rain

Wednesday

80°F · Sunny

Wind 3 to 9 mph NNW · 0% chance of rain

Wind: Calm Heat: Warm Dry

Wednesday Night

59°F · Mostly Clear

Wind 3 to 9 mph WNW · 0% chance of rain

Wind: Calm Heat: Cool Dry

Thursday

86°F · Sunny

Wind 1 to 8 mph WNW · 1% chance of rain

Wind: Calm Heat: Warm Dry

Forecast from the National Weather Service (weather.gov), pulled Tuesday, August 18th at 2:04 p.m. CDT.

When I roll up to someone's house that's clearly been hardened against wildfire, it's like a breath of fresh air. I know my chances of saving your home just went up dramatically.

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Who's on it

About 69 people are assigned to this fire, run by a Type 4 IC. The government rates it a Type 4 Incident. About $3 million has been spent on it so far.

The official feed reports the total headcount, not a breakdown by crew type.

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 Weiser Knoll Fire

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

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