From the Park District website:
"CAUTION - BEACH HAZARD STATEMENT ISSUED
The National Weather Service has issued a beach hazard statement in effect until late into the night of Saturday, July 6, and a lakeshore flood advisory in effect until 4 am on Sunday, July 7.
Life-threatening waves and currents are expected at the beaches. Caution should be exercised if visiting a beach. Check the flag color at each beach before swimming. Minor flooding is likely in flood-prone areas."