When you hear the order to “evacuate now.,” you need to do so. Staying behind not only puts you at risk, but it puts the people who are trying to put out the fire at risk. They have to make sure the area is clear. The Surprising Speed of Wildfires You may not think the emergency order is all that serious. After all, you can’t see a fire close by. What will surprise you is that forest fires have the ability to travel at 14mph. A grass fire can travel at 28mph. The firebrands? Well, they travel at a surprising 60mph. You don’t always have time to act. With the right wind conditions for the fire, the fire that was