Archive · 27 Jul 2026
Extreme Heat Wave Grips Central and Southern US
A really hot weather pattern called a heat dome is making it extremely hot in the middle and southern parts of the United States.
Lots of people, about 40 million, are feeling the heat, which is making it hard to be outside.
The heat is so strong that it canceled a horse race and is making people very tired and sick.
Experts say to stay inside, drink water, and avoid the sun to stay safe.
The heat might go away for a few days but could come back soon.
At least 40 million people under extreme heat warnings across central and southern U.S.
Heat indexes above 100°F (38°C) with some areas reaching up to 120°F (49°C)
Heat dome phenomenon trapping and prolonging high temperatures
Cancellation of a horse race in Shakopee, Minnesota due to extreme heat
High-risk groups include children, older adults, and people with certain medical conditions
- Who
- At least 40 million people across central and southern U.S.
- What
- Extreme heat wave with high temperatures and severe humidity
- When
- Second straight day, with potential return by the weekend
- Where
- Central and southern United States, including Minnesota, Mississippi, southern California, Nevada, and parts of the Southwest
- Why
- Due to a heat dome phenomenon trapping and prolonging high temperatures
Climate Change Concerns
Natural Weather Patterns
Cause of Heat Wave
Climate Change Concerns
The extreme heat is a direct result of climate change, with increasing global temperatures contributing to more frequent and severe heat waves.
Natural Weather Patterns
The heat wave is a natural weather phenomenon, specifically a heat dome, which is a regular occurrence and not necessarily linked to long-term climate trends.
- Affected Regions
- Central and southern United States, including Minnesota, Mississippi, southern California, Nevada, and parts of the Southwest
- Temperature Range
- Heat indexes above 100°F (38°C), with some areas reaching up to 120°F (49°C)
- Heat Dome
- A phenomenon where atmospheric conditions trap heat, prolonging high temperatures
- Impacted Events
- Cancellation of a horse race in Shakopee, Minnesota due to extreme heat
- High-Risk Groups
- Children, older adults, and people with certain medical conditions
- Temporary Relief
- Expected in the central U.S. by the middle of the week, with potential return of high temperatures by the weekend