The Duluth Fire Department cautions swimmers to stay out of the water off Park Point beaches on Sunday because of a high risk of rip currents.

A red-flag warning is in effect until 10 a.m. Monday, meaning that wind and wave conditions on Lake Superior support the formation of rip currents, according to a fire department news release. Red flags that denote dangerous near-shore conditions are flying at 12th Street Beach, Lafayette Square and Park Point Beach.

Rip currents are powerful, narrow channels of water that can move at speeds of up to 8 feet per second, according to the National Ocean Service. They can be life-threatening to anyone in the water and may extend as far as 100 yards offshore, according to the Fire Department.

There are no lifeguards on Park Point, the department notes.

Water temperatures today are about 36 degrees, with northeast winds at 10-15 mph and waves of 2-4 feet. More information on beach warnings can be found by visiting the Park Point Beach website.