Third US Heat Dome Puts 70 Million Under Advisories as Temperatures Climb to 120F
Updated
Updated · The Guardian · Jul 25
Third US Heat Dome Puts 70 Million Under Advisories as Temperatures Climb to 120F
3 articles · Updated · The Guardian · Jul 25
Summary
About 70 million people across the southern and central US are set to face excessive heat advisories this weekend as a third major heat dome in a month strengthens.
Temperatures of 95-105F are forecast across a broad swath from the Gulf Coast to the Great Plains and Midwest, with parts of the desert Southwest potentially hitting 120F and western Nebraska under an extreme heat warning for 108F.
The high-pressure system is expected to lock in heat into next week, while high humidity and warm nights limit relief and raise risks for older people, children, pregnant people and those with existing health conditions.
Denver could see record heat after earlier July heat domes canceled some Independence Day events in the East and drove Montana to 115F, underscoring a summer already marked by repeated extremes.
Heat remains the deadliest US weather hazard, and scientists say human-caused warming is making heat waves more frequent and severe as firefighters also battle 88 active blazes nationwide.