Chicago, Illinois, USA. 21st August 2018. Two children play in the sand while their mother stands by and a kayaker braves the waves at Montrose Beach. A red flag flies from a lifeguard stand indicating unsafe swiiming conditions caused by high surf and rip currents. Stiff northeast winds whipped up surf on Lake Michigan, bringing out kayakers, kite surfers and wave watchers. Credit: Todd Bannor/Alamy Live News

- Image ID: PFNEDC

Chicago, Illinois, USA. 21st August 2018. Two children play in the sand while their mother stands by and a kayaker braves the waves at Montrose Beach. A red flag flies from a lifeguard stand indicating unsafe swiiming conditions caused by high surf and rip currents. Stiff northeast winds whipped up surf on Lake Michigan, bringing out kayakers, kite surfers and wave watchers. Credit: Todd Bannor/Alamy Live News

Royal Freedman / Alamy Stock Photo

Image ID: PFNEDC

Location: Chicago, IL, USA