A rare ash devil briefly formed during the Trinity fire in Phelan, showing how embers can swirl in hazardous, unpredictable ways.
A sudden swirl of ash and embers over a burned patch in Phelan has firefighters and residents talking about a rare fire phenomenon known as an “ash devil.” During efforts tied to the Trinity fire in San Bernardino County. crews reported seeing a spinning column lift from remains of flames that had already been put out.
Misryoum reports that an ash devil is uncommon and forms when intense heat drives hot air upward while shifting winds introduce layers of air that move at different speeds.. Those conditions can combine to create a vortex effect, pulling ash, embers, and debris into a tight, rotating column.. When it appears. it can heighten caution because it has the potential to spread burning material beyond the immediate fire line.
This matters because wildfire hazards are often not limited to what is still actively burning. Brief, localized phenomena like ash devils can change what crews must watch for, even in areas where flames appear contained.
In the case described by Misryoum, the ash devil eventually broke apart on its own.. The conditions that sustain the swirling motion reportedly did not remain aligned long enough for the event to keep growing.. While ash devils can spit hot material in multiple directions. Misryoum indicates that no new outbreaks were reported from this specific episode.
The Trinity fire began May 1 in Phelan, prompting coordinated response across local fire agencies.. As crews worked to extinguish hotspots and secure the area. aircraft and ground teams supported operations aimed at limiting spread and preparing for a full “secure” status.. Officials say the fire did not damage structures, though it affected vegetation, including Joshua trees.
Even when a blaze is relatively small or partially contained, the atmosphere around a fire can evolve quickly. Misryoum notes that understanding the mechanics behind ash devils helps explain why wildfire response requires constant monitoring and readiness for sudden changes.
By late Saturday afternoon. Misryoum reports the Trinity fire was about half contained. with firefighters continuing the steady work of cooling and securing remaining hot spots.. For communities in fire-prone regions. the episode serves as a reminder that smoke. wind. and heat can interact in unexpected ways. turning debris into a temporary hazard that can flare and vanish within moments.