A warmth dome is trapping over 90 million Individuals in excessive temperatures this week with the Nationwide Climate Service issuing warmth alerts from Nebraska to Florida.
Harmful warmth threatens to bake a lot of the Mississippi Valley and components of the Southeast from Tuesday via not less than Thursday, with temperatures over 100 levels Fahrenheit anticipated in some areas. Some locations might see warmth index values, or feels-like temperatures, of 110 to 115 levels.
Whereas not anticipated to achieve report highs, temperatures are nonetheless forecast to be about 10 to fifteen levels above common in comparison with what they usually are this time of yr.
Maps present July warmth alerts and forecasts
Map reveals energetic warmth alerts on Monday, July 21, 2025.
Nikki Nolan/CBS Information
As the intense warmth hits components of the Corn Belt, a area over a part of the Plains and Central Mississippi Valley the place warmth index values might attain between 105 and 110 levels, excessive humidity can also be anticipated. The widespread phenomenon is called corn sweat, which happens when excessive warmth beats down on corn crop and causes it to perspire and improve the humidity within the air.
Though report highs aren’t forecasted this week, in a single day lows within the mid 70s to low 80s might probably break report excessive minimums in states like Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri, South Carolina and Tennessee, based on Local weather Central, a nonprofit that analyzes local weather change knowledge.
Excessive humidity coupled with excessive temperatures is harmful as a result of the mix considerably will increase the probability of heat-related sicknesses. Little to no in a single day reduction additionally poses a higher risk to well being, NWS Prediction Middle says.
Map reveals warmth forecast and the feels-like temperatures via Thursday, July 24, 2025.
Nikki Nolan/CBS Information
Map reveals U.S. Corn Belt, the area impacted by excessive warmth and humidity this week.
Nikki Nolan/CBS Information
Warmth waves more and more intensified by local weather change
Local weather change has made extreme warmth in July not less than thrice extra seemingly for practically 160 million individuals within the U.S., practically half the inhabitants, a Local weather Central evaluation discovered.
Utilizing its calculation of information and what’s referred to as a Local weather Shift Index (CSI), the nonprofit stated Monday that human-caused local weather change made this excessive warmth not less than 5 occasions extra seemingly for sure areas, from Salt Lake Metropolis and Santa Fe, New Mexico, to Tallahassee, Florida, and Montgomery, Alabama.
The CSI makes use of real-time knowledge to estimate how local weather change has elevated the probability of a selected every day temperature, based on Local weather Central.
Final month, one other warmth dome uncovered practically half of the nation to dangerously excessive temperatures. On June 24, seven states tied or broke month-to-month excessive temperature data, many exceeding triple digits. A type of states, Maryland, reported that 472 individuals wanted medical help for heat-related sicknesses throughout that point when the warmth index topped 110 levels in some locations.
With such occasions changing into extra widespread, Democratic lawmakers final week proposed laws to categorise excessive warmth as a catastrophe, which might permit federal funding to circulation into areas the place hotter temperatures trigger vital bodily and financial misery.
ClimateWatch: Local weather Change Information & Options
Extra
Kiki Intarasuwan