Heat

Much of the West sweltered through record-breaking heat this summer, as a strengthening El Niño, unusually warm oceans and ongoing human-caused climate change combined to push temperatures to historic levels.

Learning declines as students suffer mentally and physically in hot environments.

Experts predict a steady increase in West Nile virus as heat lingers.

In some parts of the West - like the grass and shrublands of the Idaho-Oregon-Nevada tristate area - closer to two-thirds of burned area is associated with heatwaves.

Scientists have a new name for a weather pattern reshaping how the West gets its water: so-called “snow-eater” heat waves.

The first-ever closure of its kind on the Snake lasted two weeks.

Twelve fires are over 100,000 acres.

Blood donations have fallen to a four-year low as people face extreme heat, bad air quality and flooding

Heat safety campaigns throughout the region focus on at-risk populations, outdoor workers and the unhoused.

Symptoms can range from anxiety and feelings of helplessness to post-traumatic stress disorder and increases in violence and suicide, according to research from Canada's Centre for Addiction and Mental Health.