Newsweek/Tuesday heat alerts
By Joe Edwards
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Heat-related alerts from the National Weather Service (NWS) spanned parts of 18 states on Tuesday, with a heat dome expected to cover swaths of the U.S. this week.
Why It Matters
The Centers for Disease Control and Prevention states that extreme heat can trigger heat-related illnesses, particularly among seniors, young children, and people with chronic health conditions.
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Symptoms can range from intense sweating and muscle cramps to dizziness and nausea. According to the CDC, extreme heat causes more than 700 deaths annually in the United States.
Additionally, increasing temperatures can intensify ground-level ozone pollution, creating further health concerns.
What To Know
Extreme heat warnings, issued by the NWS when "extremely dangerous heat conditions are expected or occurring," are in effect for parts of Arkansas, Missouri, Illinois, Kentucky, Tennessee, Mississippi, and Louisiana.
"Dangerously hot conditions," with heat index values—which reflect how hot it feels when temperature and humidity are considered—nearing or surpassing 110 degrees would be possible in these areas, the NWS said.
Additionally, heat advisories, which are less severe, spanned parts of South Dakota, Nebraska, Kansas, Oklahoma, Texas, Indiana, Alabama, Florida, Georgia, South Carolina, and Michigan—where heat index values were also expected to hit the triple-digit range.
"Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors," the alerts caution. "Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes."
What People Are Saying
AccuWeather meteorologist Kai Kerkow told Newsweek: "A heat dome will bring near record breaking hot conditions across the South Central U.S. this week, with cities like Wichita Falls, Dallas, and Kansas City expected to hit 100 degrees Fahrenheit for the first time this season. Nighttime temperatures will remain in the mid-70s to low-80s, offering little relief. The heat dome temporarily spreads east later this week."
Kerkow added that temperatures in cities such as New York, Philadelphia, and Washington, D.C., are expected to climb into the mid-90s.
On Friday, AccuWeather predicts a high of 95 in New York, nearing the 97 degree record set in 1999, Kerkow said.
The NWS Weather Prediction Center said on X, Monday: "Over 90 million people are under heat alerts currently (Extreme Heat Warnings, Watches, and Heat Advisories). The heat is expected to persist the longest over the Mid-MS Valley and Mid-South regions this week."
What Happens Next
At the time of writing, the latest extreme heat warning was in place until 9 p.m. CDT on Thursday.
The NWS regularly issues forecast updates on its website and social media channels.
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