TL/DR –
An unusual heat wave is forecast to spread across the Midwest, Northeast, and Mid-Atlantic regions, with triple-digit heat index values extending from the Gulf Coast to Nova Scotia, posing a significant risk to vulnerable groups. The National Weather Service predicts a “prolonged period of dangerously hot conditions” marked by intense heat and high humidity, leading to increased heat-related illnesses. The heat wave is expected to last from Monday to Friday and could break all-time record temperatures in some areas, with the heat index values reaching over 100 degrees on several days.
An extreme heat wave is imminent across the Midwest, Northeast, and Mid-Atlantic regions, with predictions of record-breaking high temperatures over several days. The combination of intense heat and high humidity from the Gulf Coast to Nova Scotia pose significant risks for vulnerable groups.
The National Weather Service predicts a dangerous heat wave accompanied by high humidity, resulting in a significant increase in heat-related illnesses, particularly for those engaged in outdoor activities.
The heatwave is already developing across the Midwest and South, with Sunday’s temperatures anticipated to reach mid-90s in Chicago and Atlanta. The heat is predicted to stretch up to southern Canada, and cities like Boston, Pittsburgh, and Washington may reach near 100 degrees as the week progresses. Unprecedented records will likely be set in southeastern Canada and northern New England, with temperatures exceeding normal by 15 to 25 degrees.
The Weather Service office in Burlington, Vt. suggests the week could be the hottest 3-day stretch in 30 years. Ohio, Michigan, Indiana, West Virginia, and Pennsylvania are already under excessive heat warnings due to intensifying heat starting Monday. The heat wave is predicted to peak from Tuesday through Friday, exacerbating heat stress.
The National Weather Service warns of extreme heat risk across Ohio Valley, Mid-Atlantic, and Northeast for several consecutive days. This level of extreme heat poses significant risks to individuals without effective cooling or adequate hydration.
Chicago’s O’Hare International Airport is predicted to reach 95 degrees, Lansing, Mich., to reach 95 degrees, Toledo to hit 98 degrees, and Cleveland to reach 96 degrees. By the weekend, the heat will shift south into the Mid-Atlantic, possibly reaching 100 degrees for the first time since 2016 in Washington.
Newark, Hartford, Conn., and Philadelphia are also predicted to tie or break their temperature records. The heatwave is caused by a massive heat dome or a high-pressure ridge that will stagnate over the northern U.S. for several days, deflecting inclement weather and causing extreme heating.
The American GFS model predicts that this heatwave could reach a key atmospheric threshold never observed before. As Earth’s climate warms due to human-induced climate change, such extreme heat events are projected to become more frequent, stronger, and expansive.
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