A powerful and persistent heat dome is gripping the United States, pushing temperatures into the upper 90s and 100s°F and placing more than 150 million people under heat alerts. Forecasters warn that the extreme conditions will continue through the end of the month, breaking records and heightening health risks nationwide.
Sweeping Heat Alerts
The National Weather Service reports that over half the U.S. population is now under some form of heat advisory, watch, or warning. By Tuesday, that number had climbed to 168 million Americans, affecting a vast swath from the Southern Plains and Midwest to the Southeast and Northeast.
In many areas, the heat index which measures how hot it feels when humidity is factored in has reached 105°F to 115°F, with portions of Louisiana and Mississippi bracing for values as high as 120°F.
Health and Safety Risks
Officials warn that the prolonged nature of this event raises the risk of heat-related illnesses and fatalities. On average, extreme heat kills 2,000 Americans each year, according to the Centers for Disease Control and Prevention.
“People need to take this seriously,” said one meteorologist with the National Weather Service. “Heat is the number one weather-related killer, and these conditions can quickly become life-threatening.”
Authorities urge residents to stay hydrated, remain indoors during peak afternoon hours, and seek air-conditioned spaces whenever possible. Those without access to cooling centers are advised to check in with local emergency management services.
Record-Breaking Temperatures
This event, driven by a stubborn heat dome, is expected to set or tie daily temperature records in several cities, including Columbia, South Carolina, and Tallahassee, Florida. Some relief may arrive by the weekend, but forecasters caution that many areas will remain dangerously hot through July 31.
What’s Next?
Alongside the oppressive heat, parts of the Midwest and Great Plains are facing the threat of severe storms, with winds potentially topping 75 mph.
As the heat wave lingers, meteorologists stress the importance of remaining vigilant and checking on vulnerable populations, including children, older adults, and those with existing health conditions.
