Heatwave or Heat Wave?

https://en.wikipedia.org/wiki/Heat_wave 

https://en.wikipedia.org/wiki/Heat_wave#Definitions_by_country 

https://en.wikipedia.org/wiki/Heat_wave#North_America

 https://globalnews.ca/news/11942602/heat-wave-canada-intensity/ 

https://toronto.citynews.ca/video/2026/06/29/toronto-gets-ready-for-heat-wave/

https://www.cbc.ca/player/play/video/9.7252888

https://www.cp24.com/local/toronto/2026/06/29/toronto-could-feel-like-its-in-the-40s-this-week-as-first-summer-heat-wave-arrives-in-the-city/ 

https://climateinstitute.ca/reports/extreme-heat-in-canada/

https://thedigitallabyrinth.blogspot.com/search?q=heatwave

https://thedigitallabyrinth.blogspot.com/search?q=heat+wave 

https://thedigitallabyrinth.blogspot.com/search?q=Canada 

https://thedigitallabyrinth.blogspot.com/search?q=Australia