- Warmer, drier summers with more extreme heatwaves
- Health risks from heat stress and dehydration
- More extreme rainfall events
- Earlier and stronger springtime peak river flows
- Lower and more prolonged summer low river flows
- Warming river temperatures (impact on fish)
- Shifting alpine vegetation zones and risks to ecosystem health
- Health risks from wildfires/smoke, airborne dust and allergens
- The Cascade snow season starting later and ending earlier
- The snowpack quantity decreasing by approximately 30-50% (but with large interannual variability)
- Rising average snow level elevations (by as much as 2,000 ft by the end of the century)
- Possible abandonment or relocation of existing ski areas
Last Updated April 8, 2022