Western US and Canada brace for another heatwave amid more than 70 wildfires

• Fires have burned about 1,562 sq miles
• Next heatwave expected to start on Saturday

The fourth searing heatwave in five weeks is set to strike the west of the United States and Canada this weekend, aggravating wildfires that are already ravaging an area larger than Rhode Island as drought and record-breaking temperatures tied to the climate crisis pummel the region.

The impending heatwave comes as 12 states are already battling 71 active wildfires. The combined area of the blazes is about 1,553 sq miles (4,021 sq km), according to the National Interagency Fire Center.