Extreme Heat Reaches East From MS Valley To Impact 185 Million Americans; Heat Indices May Hit 120F In MS, LA

[hatrack]

The eastern half of the US is facing a significant heatwave, with more than 185 million people under warnings due to intense and widespread heat conditions on Monday.

The south-east is likely to endure the most dangerous temperatures as the extreme heat spread across the region on Monday, spanning from the Carolinas through Florida. In these areas, heat index values (how hot it feels once humidity is accounted for) are forecast to range between 105 and 113F (40.5 to 45C). Some locations in Mississippi and Louisiana face an even greater threat, with the heat index possibly soaring as high as 120F (49C).

Meanwhile, the midwest isn’t escaping the heat. Conditions there remain hazardous into Monday and Tuesday, after a weekend in which temperatures felt as if they were between 97 and 111F (36 to 44C) in areas from Lincoln, Nebraska, north to Minneapolis.

Cities such as Des Moines, St Louis, Memphis, New Orleans, Jacksonville and Raleigh are under extreme heat warnings. In these locations, temperatures will climb into the mid-90s and low 100s, with heat indices potentially reaching 110 to 115F.

EDIT

https://www.theguardian.com/us-news/2025/jul/28/us-weather-heatwave-temperatures-east

[pansypoo53219]

1. hit 112f heat index. horrible outside, not so bad considering no ac. but hasn't been this humid for years.

haven't been over 85 for years.

[OKIsItJustMe]

2. Record-breaking heat wave scorches Southeast US

https://apnews.com/article/heat-wave-hot-weather-florida-southeast-6fbb7465ebaeb81ad00678e046b2c93a

Record-breaking heat wave scorches Southeast US

By RUSS BYNUM and MIKE SCHNEIDER
Updated 7:09 PM EDT, July 29, 2025

SAVANNAH, Ga. (AP) — Residents in the Southeast U.S. are no strangers to heat in the summertime. But this week’s sweltering hot weather set at least one record and has forecasters urging residents to limit time outside on Tuesday if possible — and stay hydrated.

The all-time high temperature at Tampa International Airport was broken on Sunday when the thermometer hit 100 degrees Fahrenheit (37.8 degrees Celsius). The previous record had been 99 F (37.2 C) in June 2020.

The National Weather Service said Tuesday the prolonged heat is expected to peak in the Southeast at midweek. A strong upper ridge also was generating a “dangerous and prolonged” heat wave in the central and eastern sections of the country. An extreme heat warning was in effect through Wednesday night in New Jersey counties outside New York City, and the mercury hit an unseemly 97 F (36 C) in Manhattan.

No relief in the shade
In Savannah, Georgia, landscaper Darius Cowherd took a break Tuesday in the cab of his work truck after spending the morning mowing grass, trimming bushes and blowing leaves in Forsyth Park in the coastal city’s downtown historic district.

…

Just a clarification, New York and New Jersey are not in the “Southeast.” (Except for those of us who live “upstate.”)