Colwash Fire Explodes to 8,000 Acres in Yakima and Benton Counties, Forcing 'Go Now' Evacuations

A vegetation fire that ignited near Toppenish, Washington, on Saturday morning grew to roughly 8,000 acres by nightfall, prompting Level 3 "Go Now" evacuation orders across parts of Yakima and Benton counties. The Colwash Fire started around 8:40 a.m. at an estimated 25 to 30 acres and had multiplied more than 250-fold within twelve hours, according to AppleValleyNewsNow. By evening the fire had crossed Glade Road and Lincoln Road, pushing into Benton County and forcing evacuation zones to expand more than once in a single day, per TriYak News. No injuries, deaths or destroyed structures had been reported as of Saturday evening, and containment stood at zero percent. Two roads, Sellards Road and Lincoln Road, were closed outright as the fire pushed toward Prosser. The fire is the latest entry in what is, by the state's own count, its worst wildfire season in a decade, arriving three weeks after Gov. Bob Ferguson declared a statewide wildfire emergency and a burn ban that remains in effect through the end of September.

From a Vegetation Fire Near Toppenish to a Multi-County Emergency

Fire crews responded around 8:40 a.m. Saturday to a vegetation fire about two miles northeast of BIA Road 15 and BIA Road 196, in the Mabton area of Yakima County, near a Toppenish mailing address, according to AppleValleyNewsNow. The fire was first estimated at 25 to 30 acres. By early afternoon it had reached roughly 700 acres. It nearly sextupled again by 5:30 p.m., reaching an estimated 4,000 acres, and by evening the Yakima Herald-Republic and TriYak News were both reporting a footprint of about 8,000 acres with zero containment.

That growth rate, from 30 acres to 8,000 in under twelve hours, tracks with a fire moving fast through dry grass and brush rather than timber, which typically burns hotter but spreads more slowly. The fire's path took it east across Glade Road and then across Lincoln Road toward Prosser, which is why the evacuation zone grew to include parts of Benton County by the evening update. Neither AppleValleyNewsNow nor TriYak News reported the fire's cause, and no agency had released an origin determination as of Saturday night.

The Colwash Fire is not the only large fire burning in Washington this weekend. The same news cycle carried updates on the Three Queens Fire near Kachess Lake in Kittitas County, which nearly doubled in 24 hours to 6,379 acres and was 2% contained as of Saturday evening, according to NBC Right Now. It is a separate incident in a different county, but it illustrates that Colwash crews are not the only ones in the state fighting a fast-moving fire this weekend.

The Evacuation Map: 'Go Now' Orders Span Two Counties

By 8:15 p.m. Saturday, Yakima Valley Emergency Management had issued a three-tier evacuation order covering both counties. Level 3, "Go Now," applied to the area south of State Route 22 and west of Glade Road to the Klickitat County line, and to State Route 22 itself from Glade Road east to the Benton County line, including Byron Hill Road, according to AppleValleyNewsNow. That is the highest of the three levels, meaning residents were told to leave immediately without waiting to pack.

Level 2, "Be Set," covered the north side of State Route 22 in the Mabton area, plus a section of Benton County east of the county line, south of State Route 22, and south and west of State Route 221, north of Sellards Road. Level 1, "Be Ready," the lowest tier, applied to everything east of Glade Road in the Mabton area, per the Yakima Herald-Republic.

Two roads were closed outright as the fire spread. Sellards Road was shut from Bert James Road to the county line, and Lincoln Road was closed at the Prosser city limits, according to TriYak News. Benton County Sheriff's deputies and Prosser police assisted with the closures and evacuation notifications on the Benton County side of the line, a sign of how quickly a Yakima County fire became a two-county response. Neither outlet reported a specific evacuee count or the number of homes inside the Level 3 zone, and no shelter location had been publicly announced as of Saturday evening.

Red Flag Winds and Record Drought Fueled the Run

The National Weather Service had a Red Flag Warning in effect for the area Saturday, with westerly winds of 15 to 25 mph and gusts to 30 mph, combined with relative humidity of just 15 to 25 percent, according to TriYak News. That combination, low humidity paired with sustained wind, is the standard recipe fire officials cite for rapid grass and brush fire spread, since dry fuel ignites easily and wind pushes flame fronts into new fuel before crews can build containment lines.

Those conditions did not appear in isolation. Washington has been in its fourth consecutive statewide drought year, a run of dry seasons that state officials cited when declaring a wildfire emergency earlier this month. Grass and shrub-steppe terrain in the lower Yakima Valley, the kind surrounding Mabton, cures out completely by late August in a normal year; in a fourth straight drought year, that curing happens earlier and more completely, leaving more continuous dry fuel for a wind-driven fire to run through.

The 250-fold jump from 30 acres to 8,000 acres in under twelve hours is itself a data point on how much drier this fuel is than in an average year. A fire that size, moving that fast, on a Saturday with no reported ignition source yet identified, is consistent with a wind-driven grass fire finding continuous fuel rather than a slow-building timber fire. Crews will likely need containment lines to hold overnight, since Red Flag conditions and continued west winds could push the fire further east into Benton County before humidity recovers after sunset.

Strike Teams, a State Emergency Center and a Power Outage in Grandview

Yakima Valley Emergency Management mobilized five wildland fire strike teams at 5 p.m. Saturday, alongside personnel from the Washington State Fire Marshal's Office and aircraft support, according to NBC Right Now. The state's Emergency Operations Center at Camp Murray, which coordinates resources across multiple simultaneous incidents statewide, was also engaged. Local departments activated a second-alarm structure protection response, the tier of response reserved for fires that threaten homes and outbuildings rather than open land alone.

The fire's spread also disrupted utility service. Pacific Power proactively de-energized lines in the fire area as a safety measure, cutting power to just over 800 customers in Grandview; service was restored after 7 p.m., per NBC Right Now. Preemptive de-energization during Red Flag conditions has become standard practice for Pacific Northwest utilities since downed or arcing power lines have started several of the region's largest fires in recent years, though neither outlet suggested a power line caused the Colwash Fire.

The response is also playing out against a backdrop of statewide strain. The Three Queens Fire in Kittitas County was drawing its own strike teams the same weekend, and as of the state's Aug. 1 emergency declaration, Washington already had roughly a dozen large fires burning at once statewide. Zero containment hours after strike teams arrive is not unusual for a fast-moving fire this size, but it also reflects a state where air and ground firefighting resources are being asked to cover more ground than in a typical year.

The Colwash Fire Joins Washington's Worst Wildfire Season in Years

Gov. Bob Ferguson declared a statewide wildfire emergency and a statewide burn ban on Aug. 1, citing a record-setting fourth consecutive statewide drought, unusually high temperatures and high winds. At the time of that declaration, the state was already tracking more than 1,000 fires that had burned an estimated 425,000 acres, with more than 200,000 of those acres actively burning across twelve large fires, according to the governor's office. "Our record-setting drought and high winds are creating dangerous conditions across the state," Ferguson said. "I am declaring an emergency to help prevent loss of life and property damage." The burn ban prohibits most outdoor and agricultural burning, including yard debris disposal, land clearing and uncontained campfires, through Sept. 30.

By Aug. 10, DNR reported more than 300,000 acres of its own protected land had burned statewide in 2026, the highest total since it began tracking that figure in 2016, according to MyNorthwest. That figure excludes the federal and tribal land burning in the state's largest fires, meaning the true statewide total is higher than the DNR number alone suggests.

Set against that backdrop, the Colwash Fire is not an outlier so much as one more entry in the highest-acreage season DNR has recorded in the decade it has tracked the data. A fire that grows from 30 to 8,000 acres in half a day would be alarming in any year; in a year where the state has already activated additional National Guard support and banned outdoor burning through the end of September, it fits a pattern the state itself has already treated as an emergency. For Yakima Valley residents, that context matters practically: this fire went from a 30-acre report to a two-county evacuation order inside twelve hours, and the same statewide conditions that produced it, drought, wind and cured-out fuel, are not going away by morning.

What Residents Under Evacuation Orders Should Do Tonight

For anyone inside the Level 3 "Go Now" zone south of State Route 22 and west of Glade Road, or along State Route 22 itself between Glade Road and the Benton County line, the instruction from Yakima Valley Emergency Management is to leave immediately rather than wait for conditions to worsen. Residents in the Level 2 "Be Set" zone, covering the north side of State Route 22 in Mabton and the adjoining strip of Benton County, should have a vehicle packed and ready and should not wait for a Level 3 upgrade before deciding to go.

Sellards Road remains closed between Bert James Road and the county line, and Lincoln Road is closed at the Prosser city limits, so residents planning an evacuation route should confirm an alternate path before conditions force a last-minute decision. With containment still at zero percent as of Saturday evening and Red Flag wind conditions expected to persist into the night, the boundaries of the Level 2 and Level 3 zones are likely to keep shifting; neither AppleValleyNewsNow nor TriYak News reported when the next official update was expected.

Given the burn ban in effect statewide through Sept. 30, residents in unaffected parts of Yakima and Benton counties should also treat any outdoor burning, including yard debris and uncontained campfires, as prohibited regardless of local conditions. With the Colwash and Three Queens fires both active in Washington the same weekend, and roughly a dozen large fires burning statewide as of the state's Aug. 1 emergency declaration, residents should not assume firefighting resources are concentrated solely on their own area.