Idaho · incident record
Big Rock Fire, Idaho
2,142
Acres reported
—
Contained
0
Acres since yesterday
Last updated · refreshed every 15 minutes from the NIFC WFIGS feed · awareness only — follow local authorities
Update ·
As of Aug 14, 2026, 16:30 UTC, the Big Rock Fire is no longer listed in the federal active-fire feed at 2,142 acres, in Idaho.
No change in reported size since Aug 13, 2026, 16:15 UTC.
The most recent mapped perimeter (Aug 6, 2026, 21:14 UTC) covers 2,142 acres; the mapped perimeter has been updated 6 times since the fire began.
No satellite heat detections matched to this incident in the last 24 hours (last one Aug 2, 2026, 20:52 UTC).
It was last present in the feed Aug 14, 2026, 16:30 UTC; the largest size reported was 2,500 acres. This page stays up as a record of the incident.
Big Rock Fire map
The most recent mapped perimeter (solid) and the previous day's perimeter (dashed), with the reported point of origin.
Latest perimeter Previous perimeter · Perimeters come from the WFIGS interagency perimeter service and are usually mapped once a day; the mapped area can differ from the reported acreage.
Key facts
- Size
- 2,142 acres
- Containment
- not reported
- Status
- Not in feed (last seen Aug 14, 2026)
- Discovered
- Jul 31, 2026
- Location
- Idaho
- Origin point
- 43.6381, -111.6643
- Peak reported size
- 2,500 acres
- Perimeter mapped
- Aug 6, 2026 (12 days ago)
- Satellite heat, 24 h
- none matched
Nearest towns
Distances are from the reported point of origin, not from the fire’s edge (see the perimeter map for the current extent).
- Rigby, ID
- Rexburg, ID
- Ucon, ID
- Iona, ID
- Sugar City, ID
Other fires nearby
No other wildfires listed within 50 miles right now.
Big Rock Fire daily history
The largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Aug 1, 2026, 00:45 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Aug 14, 2026 | 2,142 acres | 0 | — |
| Aug 13, 2026 | 2,142 acres | 0 | — |
| Aug 12, 2026 | 2,142 acres | 0 | — |
| Aug 11, 2026 | 2,142 acres | 0 | — |
| Aug 10, 2026 | 2,142 acres | 0 | — |
| Aug 9, 2026 | 2,142 acres | 0 | — |
| Aug 8, 2026 | 2,142 acres | 0 | — |
| Aug 7, 2026 | 2,142 acres | −7 | — |
| Aug 6, 2026 | 2,149 acres | −50 | — |
| Aug 5, 2026 | 2,199 acres | −283 | — |
| Aug 4, 2026 | 2,482 acres | −18 | — |
| Aug 3, 2026 | 2,500 acres | 0 | — |
| Aug 2, 2026 | 2,500 acres | +1,300 | — |
| Aug 1, 2026 | 1,200 acres | — | — |
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Big Rock Fire questions, answered from the data
How big is the Big Rock Fire?
As of Aug 14, 2026, 16:30 UTC, the Big Rock Fire is reported at 2,142 acres (peak reported size 2,500 acres). No change in reported size since Aug 13, 2026, 16:15 UTC.
Is the Big Rock Fire contained?
Containment has not been reported for the Big Rock Fire in the federal feed as of Aug 14, 2026, 16:30 UTC.
Where is the Big Rock Fire?
The reported point of origin is at 43.6381, -111.6643 in Idaho. Nearest towns: Rigby (13 mi W), Rexburg (14 mi NW), Ucon (15 mi W). The map on this page shows the most recent mapped perimeter.
Is the Big Rock Fire still burning?
It is no longer in the federal active-fire feed; it was last listed Aug 14, 2026, 16:30 UTC. Fires drop out of the feed when the incident is closed or handed to local management, not necessarily when every ember is out.
Where do I find evacuation orders for the Big Rock Fire?
From the county sheriff and local emergency management, not from this site. Check the official Idaho sources on our Idaho page and your county’s alert system. FireRiskHere is for awareness only.
How current is this page?
The numbers come from the National Interagency Fire Center's WFIGS incident feed and the WFIGS perimeter service, refreshed every 15 minutes, plus NASA FIRMS satellite detections hourly. This page was last updated Aug 14, 2026, 16:30 UTC. Acreage and containment are what the incident team reports and can lag by hours.
About this page
This page is generated automatically for every wildfire whose reported size reaches 1,000 acres, from FireRiskHere’s archive of the National Interagency Fire Center’s WFIGS incident feed (captured every 15 minutes), the WFIGS interagency perimeter service, and NASA FIRMS satellite detections. It stays online after the fire is contained as a record of the incident. Nothing here is an official notice — for evacuation orders and road closures follow your county sheriff and local emergency management. How the site works →