The conditions that made the fire so dangerous had been building for months. Heavy rainfall earlier in 2021 drove prolific vegetation growth across the Perth hills. Then December turned brutal. Temperatures climbed past 40 degrees Celsius, rainfall stopped, and the dew points dropped until the soil itself became dry enough to burn. Firefighters had noticed a troubling shift in recent seasons: fires that once would calm overnight, losing intensity as temperatures fell and humidity rose, were now burning fiercely through the darkness. Low overnight moisture meant no reprieve. Total fire bans had been declared across a wide area for days before the blaze began. When it did ignite on Boxing Day, the thermometer at nearby weather stations read 43.5 degrees, with wind gusts reaching 37 kilometers per hour.

By early evening, 155 hectares were burning, the fire racing westward from its ignition point. Emergency warnings covered roughly 2,479 hectares, and residents were told to evacuate. An evacuation center opened at Mundaring Arena, while the Shire of Mundaring Animal Pound and the State Equestrian Centre took in pets and livestock from fleeing families. One hundred and fifty firefighters were on the ground, supported by aerial waterbombers dumping water and retardant from above. Two new DFES airtankers were deployed to the site. The Bureau of Meteorology warned that overnight winds could gust to 60 kilometers per hour, offering little hope that darkness would slow the fire's advance. By 11:20 that night, the burned area had reached 164.5 hectares.

Overnight, the firefighters held the line. By dawn on 27 December, the fire was stationary with 100 crew members still in attendance. The emergency zone shrank to 760 hectares, though embers continued to threaten the Warrigal Estate and properties along Forge Drive and Anvil Way. The human cost was mercifully limited: one house destroyed, six outbuildings lost, and several vehicles burned. The destroyed house belonged to Monique Leahy's family, who had owned the property for nearly forty years. By evening, alert levels were downgraded. Roads reopened. The Water Corporation warned that some homes in Wooroloo, Gidgegannup, and Chidlow were without water, and Western Power worked to restore electricity to 120 homes.

WA Police Commissioner Chris Dawson delivered a detail that transformed the story from natural disaster to criminal investigation: the bushfire appeared to have three separate ignition points. The cause was treated as suspicious. For a community still raw from the Wooroloo fire that had destroyed 86 homes the previous February, the suggestion of deliberate lighting was especially bitter. The twin emergencies of fire and pandemic had forced residents to calculate impossible priorities: evacuate or comply with lockdown? Grab the photo albums or follow COVID protocols? The fire at Beechina was ultimately small compared to its predecessor up the road, but it carried a weight disproportionate to its size, landing on a community whose resilience had already been tested to breaking point.