Record-Breaking Heat Wave Forecast Across Central and Eastern U.S.

Forecasters are predicting a severe heat wave to affect parts of the United States this week. Temperatures are anticipated to reach the triple digits, possibly breaking records in some regions during the Fourth of July holiday weekend.

We expect temperatures in the 90s to low 100s from the Midwest to the East Coast, said Marc Chenard, meteorologist at the Weather Prediction Center.

The highest temperatures are likely in the Mid-Atlantic and Northeast, with cities such as Washington, D.C., Philadelphia, and New York expected to see days exceeding 100 degrees. Daily records could fall in these cities on Thursday and Friday.

Philadelphia may match its June record high of 104 degrees. Starting Sunday, the heat wave will move through the Plains, intensifying in the Great Lakes region, including Chicago, and heading toward the Gulf Coast by Tuesday.

Extreme heat conditions are forecast for much of the East Coast by Wednesday. High humidity will make temperatures feel even hotter, with heat index values potentially reaching 110 degrees, and locally up to 115.

Nights will provide little relief, as temperatures may remain high after sunset. Minimum temperatures are expected to stay in the 70s, and some Eastern cities could experience lows not dropping below 80.

The oppressive conditions are driven by a sprawling area of high pressure known as a heat dome. The heat wave is expected to persist through the Fourth of July weekend.

Toward the end of the weekend, the heat dome is forecast to move westward, potentially bringing cooler conditions to the East and chances of thunderstorms. This offers some respite from the intense heat.