Angie Marsh of LaPorte and George Abbruscato of Valparaiso burst out of a tunnel into refreshing water at Deep River Waterpark in Merrillville, Ind. Friday July 6, 2012. Another day with oppressive heat and temperatures forecast for over 100 degrees, led many people in Northwest Indiana to seek relief. | Stephanie Dowell~Sun-Times Media

The wave beat the heat in the wave pool at Deep River Waterpark in Merrillville, Ind. Friday July 6, 2012. Another day with oppressive heat and temperatures forecast over 100 degrees, led many people in Northwest Indiana to seek relief any way they could, including the waterpark. | Stephanie Dowell~Sun-Times Media

Larry Carter tries to stay cool himself as he holds an industrial strength fan in the direction of the crowd in the cafeteria during a program at the Frankie Woods McCullough Academy for Girls in Gary, Ind. Friday July 6, 2012. Carter said the air conditioning unit broke down the day before or on the July 4th holiday, leading to very hot temperatures inside the building. Fans were in heavy use in the school building as the Region faced another oppressively hot day. | Stephanie Dowell~Sun-Times Media

Ny'ell Robinson, 7, of Gary, enjoys the cool blast of a sprinkler in the front yard near 21st Avenue and Pierce Street in Gary, Ind. Friday morning July 6, 2012. Friday's temperatures are expected to reach about 103 degrees, leading Region residents to seek relief from another oppressively hot day. | Stephanie Dowell~Sun-Times Media