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STATEWIDE–Rain is likely to return to Indiana sometime Friday night, according to the National Weather Service.

“That rain is supposed to return with a cold front. Southern portions of Indiana may experience quite a bit of rainfall over the next few days. Northern Indiana will get some rain as the front moves through, but since the cold front is stalling past northern Indiana, they shouldn’t receive as much rainfall,” said Mallory Monaghan, meteorologist with the National Weather Service in Indianapolis.

Monaghan thinks multiple systems are moving into Indiana.

“We aren’t really sure how long the showers are going to linger because we have another system that’s going to move through early next week. It could last all the way through Monday and Tuesday until the next system moves through,” said Monaghan.

As of now, Monaghan thinks the next system after that one will move in late next week.

“The main threats to watch out for with these are frequent lightning, damaging winds, and the potential for flash floods,” said Monaghan.

She anticipates Friday being the hottest day of the week. Monaghan believes highs will be back down into the 80s across the state this weekend.

For Thursday, the Indiana Department of Environmental Management issued an Air Quality Action Day for the following areas:

Central Indiana – Marion, Bartholomew, Boone, Brown, Delaware, Hamilton, Hendricks, Howard, Madison, Shelby

North Central Indiana – St. Joseph, Elkhart

Northeast Indiana – Allen, Huntington, Wabash

Northwest Indiana – Lake, Porter, LaPorte

Southeast Indiana – Clark, Floyd

Southwest Indiana – Daviess, Dubois, Gibson, Greene, Knox, Perry, Pike, Posey, Spencer, Vanderburgh, Warrick

West Central Indiana – Vigo, Carroll, Tippecanoe

Children, the elderly, and anyone with heart or lung conditions should reduce or avoid exertion and heavy work outdoors.

Ground-level ozone is formed when sunlight and hot weather combined with vehicle exhaust, factory emissions, and gasoline vapors. Ozone in the upper atmosphere blocks ultraviolet radiation, but ozone near the ground is a lung irritant that can cause coughing and breathing difficulties for sensitive populations.