Post-fire area safety

Even if a tree looks sturdy, it may be at risk of falling due to damaged root systems and fire-loosened soils. As the years pass, dead trees and root systems rot and the odds of a tree falling increase. Look up and around often (fire crews say, “Head on a swivel!”). Watch for fire-affected trees, snags and overhead dangling branches. Do not linger or take breaks under burned or dead trees.

Wind increases the hazards of falling trees and branches. Don’t go out in a burned area when it’s windy. Leave a fire-affected area immediately if the wind picks up.

Fire-affected areas have less vegetation to absorb water. During rain events and snow melt, water levels can become higher than normal. Risks of flash floods and dangers when crossing streams can rise, even where a bridge exists. Drainages can become clogged with trees, rocks and other debris. Debris can act like a dam, and release powerful flash floods of water, mud and other detritus. Do not linger at water crossings; keep moving. 

Fire can strip soil of its underground vegetation, causing boulders and logs to become loose and less stable. The risk of landslides and rock falls increases with rain, and during soil freeze-thaw cycles. Check your footing and take care not to knock loose rocks onto people downslope of you.

Following a wildfire, deep, hollow cavities can form below the trail surface around stumps, root structures and dead vegetation. They may not be visible until your foot breaks through. These holes can keep smoldering for months after the fire is out. White ash may be a sign of extreme heat or a potential sinkhole. Stay on designated trails.

Some signs and infrastructure may have burned. Navigation on trails is your responsibility. Bring a map and know how to use it. Maps can be downloaded from the brochures and publications webpage or obtained at the information centre.

Check Jasper trail conditions for a general outlook. Keep in mind that a trail may become challenging or impassable without notice. Be prepared to change your plan.