Big Grass Fire Active 2026

Started: Jul 23 578,637 acre 94% contained Wildfire
Near Murphy · Owyhee County, Idaho
InciWeb

Big Grass Fire is the largest active wildfire in Idaho, burning 21 miles south of Murphy and has spread east.

Latest update

The Big Grass Fire, located 25 miles southwest of Jordan Valley, Oregon, was reported on July 23, 2026, following a lightning strike. The Flint Fire, located 8 miles northwest of Triangle, Idaho, was reported on August 25, 2026, following a lightning strike. The Flint Fire is adjacent to the Big Grass Fire on the northeastern side.

Fuels in the area consist of brush, short grasses, and tall grasses. The Big Grass 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.

The Big Grass and Flint Fires are currently being managed by Southern Area Gray Team.

48 Days Active
#1 By Size Largest active wildfire in Idaho
21 mi S From Murphy to the fire perimeter
578,637 Acres 1.9x the size of Los Angeles 21.9x the size of Galveston Island
E Spreading East
94%
Contained +0% since previous report
236 Personnel $79.3M spent $137/acre

Big Grass Fire Live Perimeter Growth

Big Grass Fire Fire Growth History
Big Grass Fire Containment History

Fires near Big Grass Fire

🔥 Coleman Creek Fire Active 2026
Started: Jul 25 308,863 acre 99% contained
Near Vale · Malheur County, Oregon
🔥 Hat Fire Active 2026
Started: Jul 24 42,122 acre 100% contained
Malheur County, Oregon
🔥 Tartar Fire Active 2026
Started: Jul 24 158,027 acre 100% contained
Near Weiser · Washington County, Idaho
🔥 Fox Fire Active 2026
Started: Jul 24 78,903 acre 100% contained
Near Baker City · Baker County, Oregon
🔥 Crooked Fire Active 2026
Started: Aug 18 10,084 acre 68% contained
Near Idaho City · Boise County, Idaho
🔥 California Creek Fire Active 2026
Started: Aug 25 959 acre 40% contained
Near Owyhee · Elko County, Nevada
🔥 Powder River Fire Active 2026
Started: Jul 17 21,088 acre 100% contained
Near Baker City · Baker County, Oregon
🔥 Calico Fire Active 2026
Started: Aug 26 18,319 acre 98% contained
Humboldt County, Nevada
🔥 Mustang Fire 2026
Started: Aug 25 5,000 acre 0% contained
Malheur County, Oregon
🔥 Long Canyon Fire 2026
Started: Aug 25 38 acre
Humboldt County, Nevada
🔥 Bull Run Fire 2026
Started: Aug 25 455 acre 50% contained
Near Owyhee · Elko County, Nevada
🔥 Mitchell Springs Fire 2026
Started: Aug 25 5,444 acre 75% contained
Malheur County, Oregon
🔥 Mm 364 Fire 2026
Started: Aug 24 0 acre
Near Weiser, Idaho · Malheur County, Oregon
🔥 Flint Fire Active 2026
Started: Aug 24 6,936 acre 90% contained
Near Murphy · Owyhee County, Idaho
🔥 Sawmill Fire 2026
Started: Aug 21 17 acre
Near Murphy · Owyhee County, Idaho
🔥 Jaca Road Fire 2026
Started: Aug 16 0 acre
Near Murphy, Idaho · Malheur County, Oregon
🔥 Annex Fire 2026
Started: Aug 14 53 acre
Near Weiser, Idaho · Malheur County, Oregon
🔥 Mm115 Hwy 20 Fire 2026
Started: Aug 7 5,139 acre 90% contained
Near Mountain Home · Elmore County, Idaho
🔥 Peer Fire 2026
Started: Jul 25 1,324 acre 50% contained
Owyhee County, Idaho
🔥 Grandold Fire 2026
Started: Jul 24 1,011 acre 0% contained
Near Mountain Home · Elmore County, Idaho
🔥 Duncan Fire Active 2026
Started: Jul 24 16,362 acre 100% contained
Near Owyhee, Nevada · Owyhee County, Idaho
🔥 Cow Fire 2026
Started: Jul 21 7,723 acre 100% contained
Near Vale · Malheur County, Oregon
🔥 Brogan Canyon Fire 2026
Started: Jul 21 319 acre 100% contained
Near Vale · Malheur County, Oregon
🔥 Dewey Fire 2026
Started: Jul 8 15 acre
Near Murphy · Owyhee County, Idaho
🔥 Whiskey Fire 2026
Started: Jul 8 999 acre 20% contained
Malheur County, Oregon
🔥 Bowden Fire 2026
Started: Jul 8 64 acre
Malheur County, Oregon
🔥 Jordan Creek Fire 2026
Started: Jul 8 56 acre
Malheur County, Oregon
🔥 Ra 6 Ada Co Claremont Fire 2026
Started: Jul 6 6,627 acre 100% contained
Near Boise · Boise County, Idaho
🔥 Mora Fire 2026
Started: Jul 6 2,410 acre 100% contained
Near Kuna · Ada County, Idaho
🔥 Rural Assist 3 Fire 2026
Started: Jun 24 85 acre
Near Hagerman · Gooding County, Idaho
🔥 Lytle Fire 2026
Started: Jun 22 6,063 acre 75% contained
Near Vale · Malheur County, Oregon
🔥 Camps Fire 2026
Started: Jun 21 8 acre
Near Council · Adams County, Idaho
🔥 Dry Creek Fire 2026
Started: Jun 20 3,205 acre 90% contained
Malheur County, Oregon
🔥 Chalk Fire 2026
Started: Jun 15 1,205 acre 95% contained
Near Glenns Ferry · Elmore County, Idaho
🔥 Keeney Pass Fire 2026
Started: Jun 8 93 acre
Near Vale · Malheur County, Oregon
🔥 Frontage Fire 2026
Started: Jun 7 1,500 acre 0% contained
Near Weiser, Idaho · Baker County, Oregon
🔥 Clover Fire 2026
Started: Jun 4 253 acre
Near Parma, Idaho · Malheur County, Oregon
🔥 Sailor Cap Fire 2026
Started: May 18 8,292 acre
Near Glenns Ferry · Owyhee County, Idaho
🔥 Otr 169 Copy Test Fire 2025
Started: Dec 16 306 acre
Near Boise · Ada County, Idaho
🔥 White Arrow Fire 2025
Started: Oct 11 349 acre
Near Hagerman · Gooding County, Idaho
🔥 Soldier Meadow Fire 2025
Started: Aug 31 5 acre
Malheur County, Oregon
🔥 Penn Hill Fire 2025
Started: Aug 28 20 acre 100% contained
Near Owyhee · Elko County, Nevada
🔥 Butte Fire 2025
Started: Aug 28 4,912 acre 0% contained
Malheur County, Oregon
🔥 Rabbit Draw Fire 2025
Started: Aug 23 75 acre
Near Owyhee · Elko County, Nevada
🔥 Hooker Creek Fire 2025
Started: Aug 16 2,273 acre 75% contained
Near Murphy · Owyhee County, Idaho
🔥 Rock Fire 2025
Started: Aug 14 2,796 acre 100% contained
Near Cascade · Valley County, Idaho
🔥 Box Fire 2025
Started: Aug 13 4,413 acre 100% contained
Owyhee County, Idaho
🔥 Rock Fire 2025
Started: Aug 13 2,796 acre 100% contained
Near Cascade · Valley County, Idaho
🔥 Juniper Fire 2025
Started: Aug 1 57 acre
Near Baker City · Baker County, Oregon
🔥 Lost Tom Fire 2025
Started: Jul 30 1,124 acre 100% contained
Near Weiser, Idaho · Malheur County, Oregon
🔥 Rock Creek Fire 2025
Started: Jul 30 17,271 acre 0% contained
Malheur County, Oregon
🔥 Cherry Fire 2025
Started: Jul 29 82 acre
Harney County, Oregon
🔥 Little John Fire 2025
Started: Jul 27 12,934 acre 100% contained
Malheur County, Oregon
🔥 Long Gulch Fire 2025
Started: Jul 27 6 acre
Near Murphy, Idaho · Malheur County, Oregon
🔥 Skyline Fire 2025
Started: Jul 27 38 acre
Near Ontario · Malheur County, Oregon
🔥 Shiny Fire 2025
Started: Jul 27 0 acre
Near Council · Adams County, Idaho
🔥 Rockhouse Fire 2025
Started: Jul 26 75 acre
Malheur County, Oregon
🔥 Black Hills Fire 2025
Started: Jul 18 4,958 acre 80% contained
Malheur County, Oregon
🔥 Cornucopia Fire 2025
Started: Jul 16 3,514 acre 100% contained
Elko County, Nevada
🔥 Coyote Fire 2025
Started: Jul 13 835 acre 100% contained
Near Murphy, Idaho · Malheur County, Oregon
🔥 2024 Valley Fire 2024
Started: Oct 7 9,904 acre 95% contained
Near Boise · Ada County, Idaho
🔥 Lava Fire 2024
Started: Sep 7 97,585 acre 94% contained
Near Cascade · Gem County, Idaho
🔥 Chimney Fire 2024
Started: Sep 6 6,521 acre 80% contained
Near Fairfield · Camas County, Idaho
🔥 Mineral Fire 2024
Started: Sep 3 15,000 acre 0% contained
Near Weiser · Washington County, Idaho
🔥 2024 Flat 2024
Started: Aug 16 3,734 acre 61% contained
Near Idaho City · Boise County, Idaho
🔥 Goat Fire 2024
Started: Aug 12 35,648 acre 51% contained
Near Cascade · Valley County, Idaho
🔥 Middle Fork Complex Fire: Bulldog and ... 2024
Started: Aug 10 61,495 acre 95% contained
Near Idaho City · Boise County, Idaho
🔥 Snag Fire 2024
Started: Aug 8 33,437 acre 90% contained
Near Cascade · Valley County, Idaho
🔥 Dollar Fire 2024
Started: Aug 7 4,360 acre 8% contained
Near Cascade · Valley County, Idaho
🔥 Paddock 2024
Started: Aug 7 187,185 acre 100% contained
Near Emmett · Washington County, Idaho
🔥 Wapiti Fire 2024
Started: Jul 28 129,063 acre 90% contained
Near Idaho City · Boise County, Idaho
🔥 Bulltrout Fire 2024
Started: Jul 28 271 acre 92% contained
Near Cascade · Boise County, Idaho
🔥 Boulder Fire 2024
Started: Jul 28
Near Cascade · Valley County, Idaho
🔥 Wolf Creek Fire 2024
Started: Jul 26 1,154 acre 100% contained
Near Cascade · Adams County, Idaho
🔥 Badland Complex 2024 2024
Started: Jul 24 54,563 acre 99% contained
Near Baker City · Baker County, Oregon
🔥 Durkee Fire 2024
Started: Jul 18 294,265 acre 95% contained
Near Baker City · Baker County, Oregon
🔥 Cow Valley Fire 2024
Started: Jul 12 133,490 acre 99% contained
Near Baker City · Malheur County, Oregon
🔥 Bear NV 2024
Started: Jun 30 38 acre 100% contained
Near Jackpot · Elko County, Nevada

Places Near Big Grass Fire

Murphy, Idaho, United States Melba, Idaho, United States Marsing, Idaho, United States Kuna, Idaho, United States Nampa, Idaho, United States Owyhee, Nevada, United States Homedale, Idaho, United States Caldwell, Idaho, United States Greenleaf, Idaho, United States Wilder, Idaho, United States Meridian, Idaho, United States Middleton, Idaho, United States Notus, Idaho, United States Star, Idaho, United States Garden City, Idaho, United States Boise, Idaho, United States Eagle, Idaho, United States Parma, Idaho, United States Mountain Home, Idaho, United States Hidden Spring, Idaho, United States Nyssa, Oregon, United States Emmett, Idaho, United States New Plymouth, Idaho, United States Fruitland, Idaho, United States Ontario, Oregon, United States Horseshoe Bend, Idaho, United States Vale, Oregon, United States Payette, Idaho, United States Glenns Ferry, Idaho, United States Idaho City, Idaho, United States Weiser, Idaho, United States Hagerman, Idaho, United States Winnemucca, Nevada, United States Battle Mountain, Nevada, United States Cascade, Idaho, United States Buhl, Idaho, United States Carlin, Nevada, United States Osino, Nevada, United States Elko, Nevada, United States Wendell, Idaho, United States