08/16/2025
⚠️ MOUNT UNDERWOOD WILDFIRE UPDATE
The Mount Underwood wildfire (V71498) south of Port Alberni has now grown to 3,668 hectares and remains Out of Control.
🚨 2 Evacuation Orders and 3 Evacuation Alerts are currently in effect.
🌲 The fire has expanded rapidly - and continues to threaten surrounding forests, roads, and communities.
💨 While recent rain has slowed some fire activity, heavy smoke and smoldering hotspots remain a concern once conditions dry again.
What Happens When the Rain Ends
Rain delays the fire, but once it ends, land and weather conditions could favor faster fire movement.
Once the rain subsides - especially if it tapers off by Wednesday, August 20, as the forecast suggests - the wildfire behavior may shift as follows:
1. Fuels Dry Out Rapidly
Moisture from light to moderate rain typically only reaches surface fuels.
With temperatures rising to 23–24 °C and humidity dropping, fine fuels like grass, needles, and twigs could dry within hours, reigniting potential.
2. Fire Danger Ramps Up Again
As the day warms and humidity lowers, the Fire Weather Index (FWI) tends to climb swiftly, increasing fire spread risk.
This sets the stage for more aggressive fire behavior, especially if winds pick up.
3. Smouldering Hotspots Revive
Even less intense fires can sustain smouldering embers in duff layers or logs.
When drying resumes, these can flare back into active fronts.
4. Spotting Resumes
Dry, windy conditions can carry embers kilometers ahead of the main blaze.
Stay alert. Stay safe.
Our thoughts are with the crews working around the clock and with everyone in the Alberni Valley who is facing this uncertainty.
❤️