Heat Wave Linked To At Least 116 Deaths In Oregon

Portland experienced a record high temperature of 116 degrees, leading to numerous heat-related deaths. A scientific analysis attributes this extreme heat wave to human-induced climate change, which has increased the likelihood of such events. Although rare, these heat waves are expected to become more frequent and intense as global warming progresses. The World Weather Attribution predicts that what is now considered a once-in-a-millennium event could occur every five to ten years if the Earth warms by another 1.4 degrees, a scenario that could unfold in the next 40 to 50 years if carbon emissions continue at their current rate.

According to the World Weather Attribution, how often is a heat wave of this extremity likely to occur in the future?

What is the projected temperature increase that could lead to more frequent heat waves?