No longer in the daily fire updates. The Brown Reservoir Fire last appeared in an official report on July 28, at 338 acres with containment not reported. Fires drop off this list once crews have them contained or out; we keep the page for reference. See fires burning now →

Brown Reservoir Fire

Custer County, Montana · Wildfire

No longer active Official numbers updated Jul 28, 2026 (1 day ago)
First reported 2 days ago
Metric Now
Size
338 acres
Jul 29, 6:00 PM
Containment
Crew size
Money spent

Brown Reservoir Fire and other nearby fires

🔥 Where this fire started Mostly contained Partly contained Containment not reported

Drag or zoom the map to see more fires in the area.

Brown Reservoir Fire summary

The Brown Reservoir Fire is a wildfire near Custer County, Montana. It has burned about 338 acres (about 257 football fields). It was first reported 2 days ago.

Size
338 acres
Containment
Not yet reported
Discovered
July 28, 2026 (first reported 2 days ago)
Cause
Not reported

The size and containment above are current as of Wednesday, July 29th at 10:00 a.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.

Today

103°F · Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms

Wind 8 to 12 mph SSE · 32% chance of rain

Wind: Breezy Heat: Very hot Some rain

Tonight

69°F · Slight Chance Showers And Thunderstorms

Wind 3 to 8 mph SSE · 32% chance of rain

Wind: Calm Heat: Cool Some rain

Thursday

93°F · Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms

Wind 3 to 9 mph ESE · 36% chance of rain

Wind: Calm Heat: Hot Some rain

Thursday Night

65°F · Slight Chance Showers And Thunderstorms then Partly Cloudy

Wind 5 to 8 mph SE · 17% chance of rain

Wind: Calm Heat: Cool Dry

Friday

100°F · Sunny

Wind 8 mph S · 8% chance of rain

Wind: Calm Heat: Very hot Dry

Forecast from the National Weather Service (weather.gov), pulled Wednesday, July 29th at 11:07 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:

Nearby fires to Brown Reservoir Fire

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

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