U.S. Heat Wave Sends Temperatures Above 115°F Across Midwest and Southwest

extreme heat warning heat index 116°F Midwest heat wave Southwest temperatures National Weather Service

The National Weather Service (NWS) issued extreme heat warnings for dozens of counties in Missouri and Kansas, reporting heat‑index values as high as 116 °F in Missouri and 115 °F in Kansas. A separate warning covered northwest Arizona, southeast California and southern Nevada, with temperatures expected between 108 °F and 120 °F, including the Death Valley region.

More than 80 million people across the central United States face heat advisories or warnings, with overnight lows remaining in the upper 70s, limiting physiological recovery. Heat‑related illnesses are expected to rise sharply.

Additional advisories include a heat advisory for Kiowa County, Colorado, forecasting a high near 105 °F, and an extreme‑heat warning for parts of Southern California (Lake Los Angeles, Lancaster and Palmdale) where triple‑digit highs are forecast. The Storm Prediction Center also placed a Slight Risk for severe thunderstorms, with dangerous wind, hail and flash‑flood potential in the Ohio Valley and Great Lakes region on Monday.

Entities: Arizona · Death Valley · Kansas · Missouri · National Weather Service · Nevada · Southern California

Claims

What the coverage asserts, and how well corroborated each claim is across sources.

[● 2 SOURCES] The National Weather Service issued extreme heat warnings for multiple counties in Missouri and Kansas with heat‑index values up to 116 °F. (NWS warning products)
[● 3 SOURCES] Heat‑index values near 110‑115 °F are forecast across the Midwest, South and Gulf‑Coast states through early next week. (forecast discussions)
[○ 1 SOURCE] A heat advisory for Kiowa County, Colorado forecast a high near 105 °F on Monday. (NWS forecast)
[○ 1 SOURCE] Heat‑index values of up to 114 °F are expected on the Alabama Gulf Coast later this week. (forecast discussion)
[○ 1 SOURCE] An Extreme Heat Warning issued on July 27 covered northwest Arizona, southeast California and southern Nevada with temperatures expected between 108 °F and 120 °F. (NWS alert)
[● 2 SOURCES] The National Weather Service warned that overnight low temperatures in the Midwest remain in the upper 70s, limiting recovery from heat exposure. (NWS warning language)
[● 2 SOURCES] A cold front is forecast to move through the affected regions by Tuesday, bringing cooler temperatures and ending the extreme‑heat warnings. (forecast discussions)
[○ 1 SOURCE] The Storm Prediction Center placed a Slight Risk for severe weather on Monday across the Great Lakes and Ohio Valley, including threats of damaging wind, large hail and flash flooding. (SPC outlook)
[○ 1 SOURCE] Over 80 million people across the central United States are under heat advisories or warnings.
[○ 1 SOURCE] The Storm Prediction Center placed a Slight Risk for severe thunderstorms with dangerous wind, hail and flash‑flood potential in the Ohio Valley and Great Lakes on Monday.
[○ 1 SOURCE] The National Weather Service issued extreme heat warnings for counties in Kansas with heat‑index values up to 115 °F.
[○ 1 SOURCE] An extreme heat warning covering northwest Arizona, southeast California and southern Nevada projected temperatures between 108 °F and 120 °F.