It’s been a busy and destructive start to Oregon’s wildfire season. Two state parks have already been evacuated by fast-moving wildfires, 56 homes have been destroyed, and 20,300 acres have burned in more than 400 fires — mostly east of the Cascades. Rafters on the popular John Day River have twice found themselves floating through the middle of an active blaze. …At one point, Interstate 84 was closed due to wildfire activity. …“What’s striking is the size of the fires we’ve seen this early in the season,” Oregon Department of Forestry wildfire spokeswoman Jessica Neujahr said. …High fire danger is expected to persist across the entire summer and into fall. …A combination of factors has led to the large wildfires seen so far this year. A wet winter led to the rapid growth of fuels like grasses in eastern Oregon, which then dried out rapidly under hot and dry spring conditions.