Rip Current

Definition: A large amount of water at the shoreline rushes in a narrow path back to the sea.

What is a Rip Current?

No matter how a rip current is formed, the effect is the same. A large amount of water at the shoreline rushes in a narrow path back to the sea. This path of water can extend as far as 3,000 feet offshore, reach 90 feet in width, and travel up to 4 feet per second.

Rip currents, sometimes incorrectly called undertows, do not pull swimmers under the water, but can pull even experienced swimmer away from shore. A rip current is formed when water that usually moves along the shore rushes out to sea in a narrow path. This can happen where

(1) there is a break in an offshore sandbar;
(2) the longshore current is diverted by a groin, pier or jetty; or
(3) longshore currents moving in opposite directions meet.

Signs of a Rip Current

Stand on a high area, such as a sand dune or deck, and scan the water. To spot a rip current, look for the following characteristics:

A streak of water that is a different color. The streak may look more murky or darker than the surrounding water.
A gap in advancing breakers where the rip current is pushing its way seaward.
A line of foam extending offshore.
An offshore plume of turbid water past the sandbar.
If still unsure, throw a floating object into the water and see if it moves steadily seaward.

What to do?

DO NOT PANIC or try to swim against the current.
Swim parallel to shore until you feel the current lessen and then swim to shore.
If you can't break out of the current, float with it until it dissipates, usually just beyond the breakers. Then swim diagonally to shore.
If you do not swim well, know your limits, stay in wading depths, and watch for sudden drop-offs.
NO MATTER HOW WELL YOU SWIM, ALWAYS SWIM IN FRONT OF A LIFEGUARD.

Used by Permission - Published courtesy of North Carolina Sea Grant, North Carolina State University, P.O. Box 8605, Raleigh, North Carolina 27695-8605, 919-515-2454