2023 Western North America heat wave

The heat wave entailed wildfires in Alberta, record temperatures across Canada and the US, and over 100 deaths in Mexico.

According to scientists, climate change increased the strength of the 2023 heatwaves including in North America.

Environment Canada stated, "While the developing heat may result in daily temperature records being broken, it must be emphasized that the expected hot conditions will not approach those reached during the 'Heat Dome' of late June 2021".

[11] On May 12, the National Weather Service issued a health advisory between May 13 and 15 for the western parts of Oregon and Washington state.

[15] On May 14, flooding of the Ogden River forced residents of Huntsville, Utah to evacuate their homes,[16] and part of State Route 504 near Mount St. Helens in Cowlitz County, Washington, was destroyed by a mudslide off the Cascade mountains.

Geographic extent of warming: Average temperatures in almost all regions in the U.S. have increased in the last 120 years. [ 6 ]
In recent decades in the U.S., the percentage of record high daily temperatures has predominated over record daily low temperatures, with record daily highs now more than twice that of record daily lows. [ 7 ]
Phoenix weather record report for July 2023