The hottest day of the summer Tuesday pushed up electricity use in the Tennessee Valley to the highest peak in August in more than seven years.

TVA said Tuesday's peak demand for power reached 29,568 megawatts at 4 p.m., when heat indexes across much of the seven-state TVA region topped 100 degrees, although the average temperature across the Tennessee Valley reached only 94 degrees Fahrenheit due to scattered storms across the Valley Tuesday afternoon and evening.

In Chattanooga, the high reached 99 degrees Fahrenheit, with the heat index topping 109, according to WRCB-TV Channel 3 Chief Meteorologist Paul Barys.

Read more from our newspartners at the Chattanooga Times Free Press.