Shae Cohan photographed these sprites on August 26. Sprites are electrical discharges that occur above thunderstorms, typically at an altitude of 30 to 55 miles. The picture was taken from Macomb, although the storms in question were southeast of Springfield near Taylorville. (click image to enlarge)
The new month started out hot in central Illinois, with temperatures near the century mark. Springfield's high of 101 degrees established a record for the month. Since weather records began in Springfield in 1879, 11 days in September have had highs of 100 degrees or higher.