California · Active · 6,914 acres
Mp18 Fire, California
6,914
Acres reported
19%
Contained
+1,265
Acres since yesterday
Last updated · refreshed every 15 minutes from the NIFC WFIGS feed · awareness only — follow local authorities
Update ·
As of Aug 18, 2026, 09:15 UTC, the Mp18 Fire is listed as active at 6,914 acres, 19% contained, in Humboldt County, California.
Since Aug 17, 2026, 09:00 UTC: +1,265 acres.
The most recent mapped perimeter (Aug 18, 2026, 06:58 UTC) covers 6,971 acres; the mapped perimeter has been updated 21 times since the fire began.
Satellites (VIIRS/MODIS) registered 15 heat detections matched to this incident in the last 24 hours, the latest at Aug 18, 2026, 04:40 UTC.
Mp18 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
- 6,914 acres
- Containment
- 19%
- Status
- Active
- Discovered
- Aug 7, 2026
- Location
- Humboldt County, California
- Origin point
- 41.1331, -123.6850
- Perimeter mapped
- Aug 18, 2026 (2 hours ago)
- Satellite heat, 24 h
- 15 detections
Nearest towns
Distances are from the reported point of origin, not from the fire’s edge (see the perimeter map for the current extent).
- Willow Creek, CA
- Westhaven-Moonstone, CA
- Blue Lake, CA
- McKinleyville, CA
- Arcata, CA
Other fires nearby
- Nelson Fire
Mp18 Fire daily history
The largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Aug 8, 2026, 01:30 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Aug 18, 2026 | 6,914 acres | +637 | 19% |
| Aug 17, 2026 | 6,277 acres | +628 | 19% |
| Aug 16, 2026 | 5,649 acres | +994 | — |
| Aug 15, 2026 | 4,655 acres | +50 | — |
| Aug 14, 2026 | 4,605 acres | +992 | — |
| Aug 13, 2026 | 3,613 acres | +1,506 | — |
| Aug 12, 2026 | 2,107 acres | +544 | — |
| Aug 11, 2026 | 1,563 acres | +63 | — |
| Aug 10, 2026 | 1,500 acres | +1,126 | — |
| Aug 9, 2026 | 374 acres | — | — |
| Aug 8, 2026 | not reported | — | — |
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Mp18 Fire questions, answered from the data
How big is the Mp18 Fire?
As of Aug 18, 2026, 09:15 UTC, the Mp18 Fire is reported at 6,914 acres. Since Aug 17, 2026, 09:00 UTC: +1,265 acres.
Is the Mp18 Fire contained?
Not fully. It was 19% contained as of Aug 18, 2026, 09:15 UTC. Containment is the share of the fire's edge that has a control line; it is reported by the incident team and can lag the ground situation.
Where is the Mp18 Fire?
The reported point of origin is at 41.1331, -123.6850 in Humboldt County, California. Nearest towns: Willow Creek (14 mi S), Westhaven-Moonstone (23 mi W), Blue Lake (23 mi SW). The map on this page shows the most recent mapped perimeter.
Is the Mp18 Fire still burning?
The federal feed still lists it as active as of Aug 18, 2026, 09:15 UTC, and satellites registered 15 heat detections matched to it in the last 24 hours.
Where do I find evacuation orders for the Mp18 Fire?
From the county sheriff and local emergency management, not from this site. Check the official California sources on our California 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 18, 2026, 09:15 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 →