The Mount Underwood Fire broke out southwest of Port Alberni, B.C., on August 11 and grew into one of the largest wildfires recorded on Vancouver Island in roughly a century. Within a day it had doubled in size, forcing evacuation orders, cutting power to hundreds of homes, and closing the only road into Bamfield.
Rain in mid-August slowed its spread, though full containment took months, and the affected road section didn’t reopen to regular traffic until that autumn.
How Did the Fire Start?
A wisp of smoke was reported along the Bamfield Main forestry corridor in the early evening, and within hours it had grown into a fast-moving blaze. The exact cause was never made public, and BC Wildfire Service investigators kept it under investigation for most of the summer.
What made this blaze different was the timing: the region had gone through weeks of near-drought conditions, so the forest floor was primed. Fire behaviour specialists later called the growth “unusual” for the coast, a phrase you don’t hear often from crews who’ve spent careers on this terrain.
Conditions That Fuelled the Growth
- Weeks of below-normal rainfall through the Alberni Valley
- Steep, densely forested terrain southwest of town
- Strong winds funnelling up the Alberni Inlet overnight
One BC Wildfire Service fire information officer, reflecting on seven years with the Coastal Fire Centre, said she hadn’t seen a Vancouver Island fire behave quite like this one. That kind of comment, from someone who watches fires for a living, tells you this wasn’t a routine event.
Vancouver Island fires don’t usually run uphill this hard this early in the season, since the coastal climate normally keeps fuels damp enough to slow ignitions.
This year was different: the Alberni Valley had seen almost no meaningful rainfall since late June. Add strong overnight winds funnelling through the inlet, and crews had a fire that behaved more like something out of the B.C. Interior than the coast.
How Big Did the Mount Underwood Fire Get?
Growth was fast from the start. The fire measured roughly 630 hectares on its first night, then more than doubled to around 1,400 hectares the next day. By midweek it had passed 2,100 hectares, and within another 24 hours it reached 3,406 hectares.
Mapping later put the final size closer to 3,700 hectares, nearly seven times the size of the smaller Wesley Ridge fire burning near Cameron Lake at the same time. For a stretch in August, it was classified as the only wildfire of note anywhere in British Columbia.
Fire Size Over Time
- Day one: about 630 hectares
- Day two: roughly 1,400 hectares
- Midweek: around 2,100 hectares
- Peak mapped size: nearly 3,700 hectares
What Resources Fought the Fire?
At the peak of the response, more than a hundred wildland firefighters worked the lines, backed by eleven helicopters, several fitted with night-vision gear. A dozen or so pieces of heavy equipment cut control lines through terrain too steep for hand crews alone, while a dedicated structure-protection unit safeguarded homes, mills, and log-sorting facilities closest to the fire’s edge.
Why the Response Took So Long
- Steep, roadless terrain limited ground crew access in several sectors
- Overnight winds repeatedly reignited previously controlled sections
- Coordinating that many personnel and aircraft required near-daily public briefings
In our experience covering coastal wildfires, a response of this scale, with an incident management team pulled in from outside the region, is reserved for exceptional fire behaviour.
Who Was Evacuated Because of the Fire?
The Alberni-Clayoquot Regional District issued evacuation orders and alerts covering Electoral Areas F and A as flames pushed toward populated ground. China Creek Campground and Marina, a site with roughly 250 tent and RV pads, was cleared on the very first night.
In our experience following BC wildfire seasons, campground evacuations that fast usually signal officials are worried about access routes closing, not just being cautious. Roughly 200 people left the order zones, a mix of residents and visitors. Bamfield itself was effectively cut off once the forestry road shut down, and more than 500 BC Hydro customers lost power when dozens of poles burned.
Community Impacts
- Two evacuation orders and three alerts across the regional district
- The Alberni Valley Multiplex opened as a relief centre for smoke-affected residents
- Bamfield’s tourism economy took a direct hit during peak season
- Power outages lasted close to two weeks in some areas
Did Rain Put Out the Fire?
Not entirely, but it changed everything. Environment Canada forecast a multi-day system, and the fire zone picked up around 17 millimetres in a single day, climbing toward 33 to 36 millimetres by the weekend. Incident commander Stefan Hood put it plainly: the rain minimized fire behaviour and slowed the spread, though it didn’t come close to extinguishing a blaze this size.
Crews used the wetter window to push into ground near China Creek that had been too dangerous to approach before. By the following week, officials downgraded the blaze to a mostly smouldering ground fire, and air quality statements covering the region were lifted soon after.
How Close Did the Fire Come to Port Alberni?
At its nearest, the fire’s edge sat about eight kilometres from the city, tighter than the twelve-kilometre buffer reported just days earlier.
That gap sounds small on a map, but officials stressed the city itself was never under direct threat, and no structures or homes were lost. No injuries were reported either, notable given how aggressively the fire behaved in its first week. A Vancouver Island wildfire specialist later described it as a “harbinger” of what coastal forests should expect more often as conditions get warmer and drier.
What Happened After the Flames Died Down?
Recovery stretched well past the point where the fire stopped making headlines. The closed stretch of Bamfield Main, formally known as Franklin River Road, needed months of slope stabilization and safety inspection from the Ministry of Transportation and Transit before it reopened that autumn. B.C.
Hydro crews rebuilt dozens of burned power poles in terrain too hazardous to access safely for weeks after the flames calmed. Once inspections cleared and the last evacuation alerts were rescinded, the Alberni Valley closed the book on one of its longest-running fire responses, even as Bamfield business owners kept counting the cost to a tourism season that never fully recovered.
FAQ
What caused the Mount Underwood Fire?
The specific ignition source was never confirmed publicly. Investigators noted severe regional drought and steep, wind-exposed terrain as the conditions that let a small ignition turn into a fast-growing blaze within hours.
How many hectares did the Mount Underwood Fire burn?
The fire grew from about 630 hectares on discovery to a peak mapped size near 3,700 hectares, making it one of the largest wildfires recorded on Vancouver Island in roughly a century.
Is the Bamfield Main road open after the Mount Underwood Fire?
Yes. The stretch of road closed since the fire’s first night reopened later that autumn once the Ministry of Transportation and Transit completed safety inspections and repair work.
Were any homes lost in the Mount Underwood Fire?
No structures were destroyed and no injuries were reported, even though the fire’s edge came within roughly eight kilometres of Port Alberni at its closest point.
