More than 80 million people are under a heat alert, with many residents forecast to reach the highest levels the National Weather Service has predicted. Heat hazard Forecasting, which assesses the risk to human health. Officials are urging residents to stay hydrated, wear light clothing and take breaks in the shade or indoors if they must be out in the heat for long periods of time.
“The longevity of dangerous heat predicted for some locations has not been experienced for decades,” the weather service said. “Warmer overnight temperatures … will provide little relief, especially for those without adequate or reliable cooling.”
Chicago, St. Louis, Indianapolis, Detroit, Cleveland, Cincinnati, Pittsburgh, Philadelphia, New York and Boston were predicted to reach Level 4 heat risk during the heat wave. This is the highest level, “rare and/or prolonged periods of extreme heat with little or no overnight relief.” Several quotes predicted it would reach Level 3, a level of heat that “would affect anyone without effective cooling and/or adequate hydration.”
Heat is expected to increase in the northern parts of the Northeast, which rarely see long periods of such extreme temperatures in June. Burlington, Vt., could see its warmest three-day stretch in 30 years Tuesday through Thursday. The weather service saidTuesday and Wednesday in Rochester, NY will be warmer than the 2018 heat wave, with highs in the mid to upper 90s.
Among the affected cities, Pittsburgh endured the longest period of extreme heat, possibly rivaling the record-setting expansion in 1994.
A high-pressure heat dome that causes dangerous heat can reach a record-breaking intensity. Research shows that human-induced climate change is enhancing the strength, magnitude and frequency of such events.
Here’s a city-by-city forecast for warmer weather this week through the weekend.
Highs in the mid-90s near 100 are expected Tuesday through at least Thursday. Calendar-day highs were 97 on Tuesday, 94 on Wednesday and 97 on Thursday. Friday could be a bit cooler, but still near the record high of 97. The heat index should reach 100 to 105 each day. Highs should be near 90 this weekend and in the 80s next week.
Highs in the mid-90s on Wednesday and Thursday will be near calendar day records of 96 on Wednesday and 98 on Thursday, with heat index highs of 100 to 105 on both Wednesday and Thursday. It’s not quite as warm on Friday, but next week with highs near 90 before cooler highs in the 80s.
Monday and Monday night should be the hottest, with Monday afternoon highs in the 90s and low 100s, with a heat index approaching 105 Monday afternoon, with Monday lows only dropping into the mid to upper 70s. Tuesday through at least Thursday will be hotter, with highs in the mid to upper 90s and near 100. It’s uncertain whether similar temperatures will continue Friday and Saturday, or if it will be cooler in the upper 80s to lower 80s. 90, where they are predicted to be Sunday next week.
Highs will be in the mid to upper 90s Monday through Sunday, with some days near 100, with a heat index approaching 105. Calendar-day record highs range from 97 to 99. “Overnight lows will only drop into the 70s, with no relief,” the weather service said.
Highs in the mid 90s Monday through Thursday, with heat indexes in the 90s to near 100 each day. Calendar-day record highs range from 92 to 96. Similar heat may continue, but with seasonal highs in the 80s Friday through Sunday and into the 90s next week.
Highs in the mid-90s Monday through Friday and into Saturday are forecast, with the heat index rising from 95 to 100 each day. Calendar-day record highs range from 95 to 99. Cooler highs in the 80s will arrive Sunday and Monday.
Temperatures begin to climb into the low 90s Tuesday and Wednesday and the heat index is in the mid 90s to near 100. Warm highs Thursday and Friday could approach the calendar day record of 98 in the mid-90s. Thursday and Friday 97; The heat index should reach the upper 90s to low 100s on both days. Similar heat may continue Saturday, but highs in the 80s near 90 Sunday into next week. Six consecutive days of temperatures hitting 90 degrees would be the first time the city has done so in June.
Temperatures begin to warm up Tuesday through Thursday, with lows in the upper to mid-90s and the heat index in the upper 90s. More extreme heat is forecast for Friday through Sunday, with daytime highs in the mid-90s near 100 and a heat index near or above 105 each day. Calendar-day record highs range from 97 to 100. Similar heat may continue on Monday but is not certain. Highs should be near 90 next week.
Monday through Saturday should reach highs in the 90s and lows in the 100s, while the heat index will be near or above 105 for days. Calendar-day record highs range from 95 to 98. Similar heat may continue Sunday, but not for sure; The following week, the highs were cooler in the 80s to 90s. The city experienced heat of similar intensity and duration 30 years ago, with six days of daytime highs of 95 or higher, June 15-20, 1994, the longest. extension such as registration, According to the weather service.
After a high of 97 and a heat index of 101 on Sunday, the city expected a high near 95 on Monday and a heat index approaching 100 again. Tuesday and Wednesday should be a bit cooler, with lows in the low to mid 90s, while Thursday through Saturday will warm in the mid 90s to near 100. Calendar-day record highs range from 99 to 105. Highs in the mid 90s early next week.
The worst heat is expected Friday through Sunday, with highs in the 90s and lows in the 100s. Calendar-day record highs range from 98 to 101. The city is likely to reach 100 for the first time since 2016. A low overnight dose in the 70s will provide minimal relief.
Matthew Kapucci and Jason Samenow contributed to this report.
