Hot weather intensifying hold on much of East, Central US

The sun rises over New York City and the Empire State Building while a man sprays water at Pier A on Saturday, July 20, 2019 in Hoboken, N.J. Temperatures in the high 90s are forecast for Saturday and Sunday with a heat index well over 100. Much of the nation is also dealing with high heat. (AP Photo/Eduardo Munoz Alvarez)

The Washington Monument is silhouetted against the morning sky as the sun rises at the start of a hot day in Washington, Saturday July 20, 2019. Temperatures in the Nation’s Capital are expected to reach the upper 90s. (AP Photo/J. David Ake)

The sun rises over New York City and the Empire State Building while a man sprays water at Pier A on Saturday, July 20, 2019 in Hoboken, N.J. Temperatures in the high 90s are forecast for Saturday and Sunday with a heat index well over 100. Much of the nation is also dealing with high heat. (AP Photo/Eduardo Munoz Alvarez)