Skip to content
DisasterStatus

High · Inactive

Big Grass Fire

Possible damage: Fire

Live status, affected area, official sources and recovery guidance.

Active wildfires

Updated
High significance Inactive 93% contained Malheur, Oregon · Last updated · source: NASA EONET

Evacuations issued during this event

  • Evacuation advisoryUS-OR-MAL-JOJ-E003Fire issued · alert expired
  • Evacuation advisoryUS-OR-MAL-JOJ-E004Fire issued · alert expired
  • Evacuation advisoryUS-OR-MAL-MAH-E061Fire issued · alert expired
  • Evacuation advisoryUS-OR-MAL-MAH-E063Fire issued · alert expired

Historical record from Oregon OEM — alert times shown are when each WEA message was issued and expired; the evacuation itself may have remained in force longer (lift times aren't published to IPAWS).

This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.

The Big Grass fire started in Malheur, Oregon on July 23, 2026, and has burned 280,000 acres with minimal containment, posing direct fire risk to structures in the affected area.

Overview written from official NASA EONET and National Interagency Fire Center/IRWIN data.

Type
Wildfires
Official size
578,637 acres
Containment
93%
Cause
Natural
Began
Status
Inactive

Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.

Affected area map

The shaded area is the affected-area perimeter reported for this event by NASA EONET (Malheur, Oregon), colored by hazard type. Pan and zoom to explore the map; when more than one observation exists, use the slider below to step through how the reported area changed.

Interactive affected-area map

Malheur, Oregon · ≈ 1,200 sq mi reported extent · Enable JavaScript to explore the map.

reported perimeter · evacuation orders as issued (dashed — move the timeline slider to see when each was in force): advisory

View the timeline — how the reported area changed

Official size & containment

Official incident size and containment reported through NIFC / IRWIN, as we observed it. Newest first.

  1. 578,637 acres +3 93% contained
  2. 578,634 acres −5 89% contained
  3. 578,639 acres −368 85% contained
  4. 579,007 acres −162 85% contained
  5. 579,169 acres +35 85% contained
  6. 579,134 acres ±0 82% contained
  7. 579,134 acres ±0 82% contained
  8. 579,134 acres ±0 82% contained
Show 48 earlier observations
  1. 579,134 acres ±0 82% contained
  2. 579,134 acres +712 82% contained
  3. 578,422 acres −26 71% contained
  4. 578,448 acres −3,778 72% contained
  5. 582,226 acres +901 55% contained
  6. 581,325 acres ±0 54% contained
  7. 581,325 acres +1,964 54% contained
  8. 579,361 acres ±0 34% contained
  9. 579,361 acres ±0 34% contained
  10. 579,361 acres +4,018 34% contained
  11. 575,343 acres ±0 36% contained
  12. 575,343 acres +21,371 36% contained
  13. 553,972 acres ±0 35% contained
  14. 553,972 acres +12,893 35% contained
  15. 541,079 acres ±0 41% contained
  16. 541,079 acres +36,694 41% contained
  17. 504,385 acres ±0 39% contained
  18. 504,385 acres +62,069 39% contained
  19. 442,316 acres +162,316 41% contained
  20. 280,000 acres ±0 39% contained
  21. 280,000 acres −110,900 39% contained
  22. 390,900 acres +110,900 39% contained
  23. 280,000 acres −78,911 39% contained
  24. 358,911 acres +78,911 39% contained
  25. 280,000 acres ±0 35% contained
  26. 280,000 acres ±0 35% contained
  27. 280,000 acres −66,678 35% contained
  28. 346,678 acres +4,326 35% contained
  29. 342,352 acres ±0 25% contained
  30. 342,352 acres +62,352 25% contained
  31. 280,000 acres −56,779 19% contained
  32. 336,779 acres +29,261 19% contained
  33. 307,518 acres ±0 19% contained
  34. 307,518 acres +3,289 19% contained
  35. 304,229 acres +24,229 21% contained
  36. 280,000 acres −23,057 21% contained
  37. 303,057 acres ±0 21% contained
  38. 303,057 acres +1,485 21% contained
  39. 301,572 acres ±0 15% contained
  40. 301,572 acres +21,572 15% contained
  41. 280,000 acres −8,120 5% contained
  42. 288,120 acres ±0 5% contained
  43. 288,120 acres +8,120 5% contained
  44. 280,000 acres −20,000 5% contained
  45. 300,000 acres ±0 5% contained
  46. 300,000 acres +20,000 5% contained
  47. 280,000 acres ±0 5% contained
  48. 280,000 acres 5% contained

Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NASA EONET ↗.

Restoration help near this event

Tap your city for a vetted local pro on that service, answered 24/7. Where we don't have a nearby city page yet, the step-by-step guides cover what to do first.

Fire damage restoration

What to do now

Find a fire damage restoration pro

Water damage restoration

Putting out a fire — hose lines, sprinklers, suppression — often floods the property and leaves water damage behind too.

What to do now

Find a water damage restoration pro

Latest updates

Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.

  1. Incident update InciWeb

    2026 Big Grass Fire

    The Big Grass Fire started on July 23, 2026, following a lightning strike. Fuels in the area consist of brush, short grasses, and tall grasses. The fire will continue to exhibit extreme fire behavior, with rapid rates of spread in all directions when smoke lifts and winds pick up in the afternoon.The fire has advanced to the point where protection of the wildland-urban interface has become the primary operational focus. Point protection operations are underway for multiple residences as the fire continues to progress. Continued fire spread is expected into Idaho along both the northern and southern portions of the fire area, with steady eastward progression up South Mountain.Numerous residential structures, outbuildings, and associated improvements remain threatened as the fire continues to advance toward the community of Jordan Valley. Additional values at risk include the Wild and Scenic River corridor, North Fork Campground, Three Forks Campground, priority sage-grouse habitat, essential pronghorn habitat, grazing allotments, a Remote Automated Weather Station (RAWS), the South Mountain communication site, and numerous mining operations farther north. Continued fire spread has t…

    Read the full update at InciWeb ↗

  2. Incident update InciWeb

    Big Grass Fire

    The Big Grass Fire was reported on July 23, 2026, following a lightning strike. Fuels in the area consist of brush, short grasses, and tall grasses. The fire exhibited extreme fire behavior, with rapid rates of spread in all directions when smoke lifted and winds picked up in the afternoon.Numerous residential structures, outbuildings, and associated improvements were threatened. Additional values at risk include the Wild and Scenic River corridor, North Fork Campground, Three Forks Campground, priority sage-grouse habitat, essential pronghorn habitat, grazing allotments, a Remote Automated Weather Station (RAWS), the South Mountain communication site, and numerous mining operations farther north. Continued fire spread has the potential to impact residential properties, critical infrastructure, recreational facilities, wildlife habitat, rangeland resources, and fire weather monitoring capabilities.California Interagency Incident Management Team 5 assumed command of the Big Grass Fire July 28, 2026. Northwest Complex Incident Management Team 10 (NW10) assumed command of the fire August 11, 2026.

    Read the full update at InciWeb ↗

Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NASA EONET ↗.

Call (833) 652-7533