SAN FRANCISCO—The U.S. Coast Guard reported extreme high tides, colder temperatures, and flood warnings in the Marin County, San Francisco, and Central California coastal areas on Tuesday, November 24.

In a ‘Marine Safety’ press release, the Coast Guard urged “boaters, fishermen, divers and beach-goers” to exercise extreme caution in and around the waters “due to forecasted colder temperatures, strong winds, precipitation and king tides, Monday evening through Wednesday.”

The Coast Guard further stated that the first set of extreme tides will impact all beaches and coastal areas in the Central and Northern California region on Tuesday morning. The Marin Coast will likely be flooded due to extreme tides, strong winds, and rainwater runoff. Local beaches, underpasses, harbors, and surrounding trails and roadways are also expected to be affected by the abnormal tides, which are expected to last until Thursday at the latest.

According to the National Weather Service, temperatures are expected to dip into the mid-40s, with the roughest day for rip currents and highest level for tides will be Wednesday, when tides could reach over an estimated seven feet. As a safety pre-caution, beach and cove entryways may be closed as a result of the high tides.

“We encourage all persons on or around the coast to remain especially cautious during this storm system,” says CWO Andrew Cohen, Command Duty Officer at the San Francisco Sector Coast Guard. “We stand ready to respond if boaters and beachgoers find themselves in distress,” says Cohen.

The U.S. Coast Guard recommends safety practices such as monitoring weather and storm conditions throughout the day before heading out, especially for those who plan to be out on or near the water this week. For a full list of water-safety tips from the Coast Guard, a comprehensive list of safety tips have been posted on their website.