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50 year anniversary of June 13, 1976, Lemont-Argonne tornado and significant flash flood

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Five Day Outlook

Here is a look at the heat index forecast for select locations through Thursday.

Peak afternoon heat index values of of 100-110 degrees will continue through Thursday before periods of thunderstorms bring slightly cooler (but still warm) weather by Independence Day.

The heat waves continues today and is likely to persist through at least Thursday. Periods of thunderstorms are expected to bring some relief from the heat late Thursday and especially Friday into Independence Day.