heat dome
noun
plural heat domes
: a large weather pattern characterized by high atmospheric pressure that collects and holds an unusual amount of heat over a particular area
Examples of heat dome in a Sentence
Recent Examples on the Web
Air conditioning will be keeping millions of Americans safe and comfortable over the holiday weekend as a heat dome brings dangerous conditions to millions.
—
Ignacio Calderon,
USA Today,
3 July 2026
With a heat dome sweeping across the United States, the best course of action is to stay hydrated, out of the sun, and inside with some technological entertainment.
—
Kelsey Fogarty,
PC Magazine,
2 July 2026
Just don’t forget the sunscreen — a heat dome is expected to push temperatures close to 100 degrees.
—
Fritz Hahn,
Washington Post,
2 July 2026
These episodes have been triggered by intense heat domes — stubborn areas of high pressure that lock hot air in place — and are clearly supercharged by global warming, experts say.
—
Andrew Freedman,
CNN Money,
1 July 2026
Temperatures are expected to top 100 degrees over the coming days, as high pressure traps the scorching temperatures in a heat dome, spanning from the Gulf Coast, up through the Midwest and Northeast United States.
—
Molly Parks,
The Washington Examiner,
1 July 2026
The 10 warmest years since 1850 have occurred since 2013, with heat domes becoming annual.
—
Marshall Shepherd,
Forbes.com,
1 July 2026
On the technical side, heat domes have fully closed off circulations that dominate the skies completely with the wind moving in a clockwise motion over hundreds or thousands of miles.
—
Sean MacAday,
Sacbee.com,
1 July 2026
With the Midwest again trapped under a heat dome, with scorching temperatures and sweltering humidity, the lives lost more than 30 years ago have been top of mind for many.
—
Adam Harrington,
CBS News,
1 July 2026
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Ignacio Calderon,
USA Today,
3 July 2026
With a heat dome sweeping across the United States, the best course of action is to stay hydrated, out of the sun, and inside with some technological entertainment.
—
Kelsey Fogarty,
PC Magazine,
2 July 2026
Just don’t forget the sunscreen — a heat dome is expected to push temperatures close to 100 degrees.
—
Fritz Hahn,
Washington Post,
2 July 2026
These episodes have been triggered by intense heat domes — stubborn areas of high pressure that lock hot air in place — and are clearly supercharged by global warming, experts say.
—
Andrew Freedman,
CNN Money,
1 July 2026
Temperatures are expected to top 100 degrees over the coming days, as high pressure traps the scorching temperatures in a heat dome, spanning from the Gulf Coast, up through the Midwest and Northeast United States.
—
Molly Parks,
The Washington Examiner,
1 July 2026
The 10 warmest years since 1850 have occurred since 2013, with heat domes becoming annual.
—
Marshall Shepherd,
Forbes.com,
1 July 2026
On the technical side, heat domes have fully closed off circulations that dominate the skies completely with the wind moving in a clockwise motion over hundreds or thousands of miles.
—
Sean MacAday,
Sacbee.com,
1 July 2026
With the Midwest again trapped under a heat dome, with scorching temperatures and sweltering humidity, the lives lost more than 30 years ago have been top of mind for many.
—
Adam Harrington,
CBS News,
1 July 2026
Cite this Entry
“Heat dome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20dome. Accessed 7 Jul. 2026.
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