One minute you’re frolicking in the sea, the next you’re being sucked away from shore as if a sea monster is slurping you into a straw. You’ve just met a rip current. Rip currents are narrow channels of water flowing rapidly out to sea. Usually, sand slows them down, but if there’s a dip in the sandbar, it’s a fast track off shore.
Rip currents, often mistakenly called riptides, can occur in any kind of weather, and on any beach with breaking waves. Weather conditions that are rip-current friendly include very windy days and approaching storms. All beaches—including those of large lakes, such as North America’s Great Lakes—have experienced rip currents.
The reason rip currents are so deadly is that many people don’t understand how they work. A rip current moves pretty fast—faster than you can swim. When people try to swim against a rip current, it’s like swimming on a treadmill. No matter how hard you swim, you won’t make it any closer to shore. In the end, people wind up too exhausted to swim anymore, and they drown.
Rip currents can form at any time, but there are some warning signs that one might be lurking: a streak of muddy water heading out to sea, a rippled stripe of water, or crisscrossed waves can all indicate a possible rip current. Swim where lifeguards are on duty; they will have up-to-date info on the rips.
• The good news is that rip currents aren’t very big. A typical rip current is less than 100 feet (30.5 m) wide and rarely extends more than 100 yards (91 m) from shore.