Subalpine wildflower meadows, like those of Mount Rainier National Park for example, could be replaced by subalpine forest, a process that has already begun. At lower elevations, warmer, drier conditions may result in more intense fires. Massive fires typically has occurred in the Central Washington Cascades about once ever four centuries. In the future, we might expect conditions for such fires every century. Trees undergoing temperature and moisture stress will be most susceptible to infestations.
Skiing is a major recreational activity in the Pacific Northwest.
A 5.5 degrees F temperature increase would cause the snowline to retreat up the mountains by about 1,700 feet. Rising snow levels combined with an earlier spring meltback could result in a shrinking ski season. Hiking, as well, is a favorite activity for many in the Pacific Northwest. With the increased likelihood of forest fires and pest outbreaks, the natural scenic beauty of the region may be disrupted by burned and sick forests. Sport fishing would also be impacted as climate changes alter the lake, river and ocean habitats of Northwest fish.