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)
Peoria's wettest month on record occurred in September of 1961, when a grand total of 13.09 inches of rain fell. Nearly half of this occurred during a two day span on the 12th and 13th, when 6.33 inches of rain fell.