Nearly 100 million people are facing heat warnings and advisories across the US this week due to an early season heat wave that’s seen high-temperature records set from California to Texas over the weekend.
Why it matters: Heat waves are the deadliest type of weather emergency in the US and they’re growing in frequency and intensity due to global warming.
Threat level: “Dangerous heat” was set to continue across the Southwest and Southern and Central overnight before “shifting farther north and east on Monday and Tuesday,” the National Weather Service warned.
- Excessive heat warnings and advisories stretch from the Desert Southwest to the lower and middle Mississippi Valley, with more record heat expected across those areas Sunday night, with nighttime temperatures forecast to bottom out in the upper 70s and 80s in many locations, per the NWS.
- All of Arkansas and Oklahoma, most of Louisiana, Tennessee, Nebraska, Missouri, Illinois and Texas, as well as large parts of Arizona and New Mexico, were under heat advisories and excessive heat warnings through early this week.
By the numbers: The National Weather Service issued excessive heat warnings for some 25 million people and heat advisories for nearly 72 million others Sunday.
Zoom in: Las Vegas hit a high of 109°F on both Friday and Saturday, tying the record high set back in 1956, the National Weather Service tweeted.
Our thought bubble, viaAxios’ Andrew Freedman: This extreme heat event is hitting normally warm places but with temperatures that are unusually hot for so early in the season.
- The public health risks are compounded by record warm overnight temperatures, which deprive people of the chance to cool down, and raise heat illness risks.
- The heat is likely to swell east over time, roasting the Carolinas, Midwest, Ohio Valley and Mid-Atlantic before re-settling back in the center of the country. The Southwest gets a reprieve after today, but the rest of the country does not.
Editor’s note: This article has been updated with the latest details on the heat wave. The story’s caption has been corrected to reflect the temperatures are for June 12, 2022, not June 12, 2011.