What is a 'heat dome'?
The "heat dome" weather phenomenon can trigger record breaking temperatures. In Iran in 2015, a heat dome caused the heat index to hit 165 degrees.
UP NEXT
NOW PLAYING: News
What is a 'heat dome'?
CNN
UP NEXT
-
This is what thundersnow sounds like
CNN
-
Blizzard vs snow storm explained
-
Local Alert: Rainy Day in the A
The Weather Channel
-
Southern Soaker for the South Late Week
-
2018 Fewest Tornado Deaths on Record
-
Severe and Rain Threat from Warm Side of Winter Storm Eboni
-
Local Alert: Rain for Charleston
-
Local Alert: NY Rain
-
Heavy Rain Will Continue to Soak Parts of the Waterlogged South
-
Big Changes Coming This Week
-
Local Alert: Slow Go in D.C.
-
Rounds of Rain to End the Year in the South
-
How to Help Keep Your Trees Falling During a Storm
-
Will Weather Affect Your Christmas Travel
-
National Forecast
-
Rounds of Rain to End Year in Southeast
-
Three Big U.S. Weather Changes to Expect This Weekend
-
More Rain on Tap for Soggy South
-
Cross Country Storm Could Bring Snow, Ice Through the Weekend
-
Looking Ahead at a Brewing Winter Storm
-
Severe and Flood Threat for South to End Week
-
More Rain this Week for the Already Soggy South
