Extreme heatwave set to ravage large swaths of East with record temperatures this week


A long and widespread heat wave is expected to grip the Midwest and Northeast with record temperatures through next week, ushering in summer with the most significant heat event this year.

Nearly 200 high temperature records could be tied or broken this week as a massive heat dome settles over part of the East and could last until early next week. Some areas could experience the longest heat wave they have seen in decades, the National Weather Service’s Weather Prediction Center said.

Tens of millions of people who are not used to such intense heat will be sweating this week in temperatures that could reach the 90s.

Heat arrived in the South and Midwest as many families celebrated Father’s Day outdoors on Sunday, prompting weather services to stay cool despite high temperatures of 90 degrees in some areas.

According to the National Weather Service, for the rest of the week, the risk for extreme heat is in place from the Great Lakes to the Northeast. This includes the major metropolitan areas of Chicago, St. Louis, Detroit, Cleveland, Pittsburgh, New York and Boston.

On Monday afternoon, temperatures will reach 15 to 20 degrees above normal over a large area of ​​the northeastern United States and are expected to reach 25 degrees above normal during the remainder of the work week.

Some areas, including Pittsburgh, haven’t experienced such heat in about three decades.

“The last time we saw heat in Pittsburgh comparable to what we expect next week was 30 years ago (almost to the day), when it reached 95°F or higher for 6 consecutive days (June 15-20, 1994),” the local said. the weather service office said. “This is the longest period of 95+ degree days on record. We have a chance to tie or beat this.

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Heating domes trap air and bake it under abundant sunlight for days, making each day hotter than the last. The oven-like conditions mean nighttime temperatures often don’t cool enough to relieve overheated bodies, posing an increased risk of heat-related illnesses.

“Warm nighttime temperatures falling only into the mid-70s will offer little or no relief, especially to those without adequate or reliable cooling,” the Weather Prediction Center said.

Humidity will also combine with extreme heat to create triple-digit heat indices – measurements of how warm the human body feels – in certain areas.

Chicago residents could experience heat indexes between 95 and 105 degrees through next week, the Chicago NWS warned. Parts of Eastern New York and Western New England could see readings as high as 107 degrees.

Heat-related illnesses are a concern in severely affected areas, particularly among the elderly, young children and outdoor workers. Extreme heat is by far the deadliest form of weather, killing on average twice as many people per year as tornadoes and hurricanes combined.

Scientists warn that heatwaves will become more severe as the climate crisis intensifies.

The NWS in Detroit, where the heat index could reach 100 degrees, urged residents to adopt heat safety measures in the coming days, including limiting strenuous outdoor activities, staying hydrated and checking on neighbors elderly or without air conditioning. .

CNN’s Robert Shackelford contributed to this report.

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