Storms and showers have replaced the heat wave that broke daily records for high temperatures in the eastern half of the United States.

Forecasters said that the upper Midwest and portions of the Northeast and Mid-Atlantic could see some severe thunderstorms and dangerous winds over the weekend. Following a days-long heat wave that saw temperatures in the upper 90s and triple digits in several major cities, the storms will feed on the hot and humid air that is still present in the country's central and eastern regions, according to AccuWeather.

The Storm Prediction Center said that as sporadic severe thunderstorms move across southern Minnesota and eastern South Dakota on June 28, "all severe hazards" could occur in those areas. Storms are predicted to form in areas of New York and Pennsylvania later in the afternoon and evening. According to the center, wind gusts of 50 to 60 mph are possible.

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Major cities including Minneapolis and St. Paul, Minnesota; Sioux Falls, South Dakota; and Albany, New York, are in the line of potentially severe thunderstorms, putting well over 9 million people in these areas at danger of storm impacts.

Preliminary reports of tornadoes, hail, and strong winds that brought down trees in North Dakota were prompted by storms on June 27. According to some early reports, the hail was the size of a tennis ball or golf ball.

Severe storms are predicted for the Northern and Central Plains, as well as the upper Mississippi Valley, on June 28. Frequent lightning, strong wind gusts, hail, and perhaps a few tornadoes are all predicted throughout the storms. According to the National Weather Service, the hail that falls over Minnesota may have a diameter of two inches or more.

On June 28, short tornadoes are expected to emerge in the Hudson Valley of New York, according to AccuWeather. The National Weather Service predicts showers and thunderstorms will develop in areas of the Mid-Atlantic and Ohio Valley by June 29. The storms may be severe or powerful in some areas of the Mid-Atlantic.

According to the weather service, the upper Great Lakes and upper and mid-Mississippi Valley may see frequent lightning, wind gusts, and a slight risk of tornadoes and hail later this weekend.

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Over the past week, a heat wave has affected much of the country's eastern half, breaking more than 2,800 temperature records, according to AccuWeather. There were 1,899 high minimum temperatures and 955 daily high temperature records in the collection.

On June 24, the heat was particularly intense, with many East Coast residents experiencing temperatures they hadn't experienced in more than 10 years. The temperature in Newark, New Jersey, hit 103 degrees that day, surpassing the daily high of 97 degrees set in 1966. It surpassed the 2010 record of 97 degrees on that date in Queens, New York, with a temperature of 102 degrees.

The record of 99 degrees for June 24 in 1923 was broken by Philadelphia, which reached 101 degrees. Humidity made temperatures feel considerably hotter in several locations.