The year’s most significant heat wave so far is expected to roast a large portion of the central and southern United States on Father’s Day Sunday with potentially record-breaking high temperatures, four days away from summer’s official start.

The National Weather Service warned people in the South and Midwest planning to celebrate dads outdoors on Sunday to stay cool amid a major heat risk, with high temperatures into the 90s in some areas.

The intense heat wave won’t stop there. An expansive and exceptionally strong heat dome will build Sunday over the East and stretch into the Midwest and Great Lakes over the next few days, with the heat expected to persist through the week.

Heat domes trap air in place and bake it with abundant sunshine for days on end, making each day hotter than the last.... Read More: CNN