The latest heat dome toppled record temperatures in the Maritimes on both Monday and Tuesday. Marine air and a weather front from the west will break the heat by Friday.
A continued movement south and east of wildfire smoke from blazes in northern BC, northern Alberta, Saskatchewan, Manitoba, and northern Ontario is expected through the first half of this week.
A cold front colliding with the heat and humidity will trigger the development of showers and thunderstorms Thursday afternoon and evening in New Brunswick.
A broad ridge of heat and high pressure will largely remain in place for the Prairies and northern Ontario as the area continues to be impacted by soaring temperatures and wildfire smoke.
The National Weather Service, as part of the National Oceanic and Atmospheric Administration, released their first forecast for the 2025 Atlantic hurricane season Thursday.