Of all the hazards a hurricane produces, rip currents are the one most likely to reach people who think they are safe. A storm churning hundreds of miles out at sea can send waves to a sunny beach where no cloud is visible, and those waves feed narrow rivers of water rushing back out to sea. Each year these currents are a leading cause of surf-zone deaths in the United States, and many of their victims never saw the storm that killed them.
A Hazard That Travels Hundreds of Miles
Hurricane hazards can extend far from the center and landfall. Ocean swell can reach beaches hundreds or thousands of miles away, creating dangerous surf and rip currents even under clear skies.1
Distant storms can generate dangerous surf and rip currents without making landfall nearby. The hazard may precede local stormy weather and persist after the cyclone has moved away.1
Hurricane Lorenzo in 2019 illustrates the reach of the problem. Lorenzo stayed in the open Atlantic and never struck the United States, yet its rip currents and rough surf caused 8 deaths along the U.S. East Coast from the resulting dangerous surf.2 The storm was thousands of miles away when the swell it generated began drowning swimmers on American beaches.
NWS Wakefield documents coastal impacts from Hurricane Erin in 2025. A distant storm’s swell can be hazardous even where local winds are modest; check beach-specific forecasts and closures.3
How Distant Storms Build Long-Period Swell
The connection between a faraway hurricane and a dangerous beach comes down to how waves carry energy. A hurricane's winds transfer energy to the ocean surface, building waves within the storm. As those waves move out from under the wind that created them, they sort themselves out. The longer, faster waves pull ahead of the shorter, slower ones and travel across the ocean as smooth, evenly spaced swell.
Long-period swell can travel far and transform as it enters shallow water. Wave energy also depends strongly on height, so smooth, evenly spaced waves do not establish the strength or distance of their source storm. Breaking waves and beach shape help drive the currents near shore.
Rip currents are the return path. When wave after wave breaks and stacks water against the beach faster than it can drain away, the excess water funnels back to sea through a narrow channel. Wave height, direction, period, beach shape, and water level all influence rip-current strength, which is why a beach can be calm one day and dangerous the next without any change in the local weather.1
What a Rip Current Actually Is
A rip current is a strong, narrow channel of water flowing away from the shore, out through the surf zone. It is not an undertow that drags swimmers beneath the surface, and it is not a "rip tide," a term that wrongly suggests the tides cause it. A rip current pulls a swimmer out to sea, not down, and that distinction is central to surviving one.
These channels are typically narrow. A rip current can be as narrow as 10 or 20 feet (3 to 6 m) in width, though some may be up to 10 times wider.4 Because they are confined, escaping a rip current is often a matter of swimming a relatively short distance sideways to reach calmer water.
The speed is what makes them lethal. Rip currents have been measured to exceed 5 mph (8 km/h), and in some cases as fast as 8 feet per second (2.4 m/s).4 That is faster than an Olympic swimmer can sustain.5 A person who tries to swim straight back to the beach against that flow is swimming against a river moving faster than they can, and exhaustion sets in quickly. Drowning in a rip current is usually the result of panic and fatigue, not of being pulled under.
Why Rip Currents Are a Leading Surf-Zone Killer
The numbers underline how dangerous these currents are. It is estimated that 100 people are killed by rip currents annually in the United States, and lifeguards rescue tens of thousands of people from rip currents every year.5 A peer-reviewed analysis of two decades of lifeguard rescue data found that rip currents are the primary cause of the large majority of surf rescues on American beaches.6
Several factors make rip currents uniquely deadly among hurricane hazards. They can be dangerous in good weather: rip currents can occur on fair-weather days when the ocean looks inviting,1 so the people in the water are often relaxed beachgoers rather than anyone braced for a storm. They are hard to see, especially for an untrained eye. And they pull strongest exactly when the surf is up, drawing more swimmers into the water on the very days the danger peaks.
Swim near an on-duty lifeguard, follow posted restrictions, and ask about conditions. No statistical estimate makes a particular swim safe; risk varies with surf, location, and ability.4
How to Spot a Rip Current
Rip currents leave clues on the water surface, though spotting them takes practice. Look from an elevated vantage point, such as a dune or boardwalk, before going in. Signs to watch for include:
- A channel of churning, choppy water cutting through the lines of breaking waves.
- A gap in the pattern of breaking waves, where the water looks flatter or darker because waves are not breaking there.
- A line of foam, seaweed, or debris moving steadily seaward.
- A difference in water color, often a darker streak where the deeper rip channel has scoured a path through the sandbar.
If you are unsure, ask a lifeguard. They know where the rips are forming on a given day, and conditions can change with the tide and the swell.
How to Escape a Rip Current
If you are caught in a rip current, your response in the first few seconds matters more than your strength as a swimmer.
Do not fight the current. Rip currents generally carry water away from shore rather than downward, but drowning can still occur. Conserve energy, float or tread water, and call and wave for help.4
If you can swim out, follow the shoreline. Swim along the shore to get out of the current, then toward the beach once free. If you cannot escape, float and signal for help instead of exhausting yourself.4
Float if you cannot escape. If you are unable to swim out of the current, conserve your energy. Float or tread water and let the current carry you. Many rip currents weaken or release a short distance offshore, and you can swim back once free.
Signal for help. Face the shore, wave one arm overhead, and call out. If you see someone else caught in a rip, do not swim out to them. Throw them something that floats and get a lifeguard. Would-be rescuers without flotation are themselves frequent drowning victims.
Staying Safe When a Distant Storm Is Out There
The most reliable defense is information. When a hurricane is anywhere in the ocean basin, check the National Weather Service surf zone forecast for your beach, which calls out the rip current risk level for the day. The National Hurricane Center publishes a rip current risk map whenever at least one tropical system is active, highlighting exactly the distant-storm threat that catches people off guard.1 Heed posted beach flags and any closures or swimming restrictions, and swim only at beaches with lifeguards on duty.
Above all, respect the deceptive calm. A bright, hot day with appealing waves is precisely the condition under which a far-off hurricane does its quiet damage. To understand how forecasters anticipate this hazard days in advance, see how hurricane forecasting works. For the other ways hurricane waves reshape the coast, see hurricane waves and coastal erosion, and for the hazard that does the most damage at landfall, see storm surge mechanics. For the full picture of how these storms work, start with the hazards overview.
Sources
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National Hurricane Center. (2024). Rip Current Overview and Rip Currents. NOAA. https://www.nhc.noaa.gov/rip-currents/ ↩ ↩2 ↩3 ↩4 ↩5
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NHC. Hurricane Lorenzo (2019), Tropical Cyclone Report. https://www.nhc.noaa.gov/data/tcr/AL132019_Lorenzo.pdf ↩
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National Weather Service Wakefield, VA. (2025). Summary of Impacts from Hurricane Erin. NOAA. https://www.weather.gov/akq/Aug212025_Erin ↩
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National Weather Service. (2024). Rip Current Frequently Asked Questions. NOAA. https://www.weather.gov/safety/ripcurrent-faqs ↩ ↩2 ↩3 ↩4 ↩5
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National Ocean Service. (2024). What is a rip current? NOAA. https://oceanservice.noaa.gov/facts/ripcurrent.html ↩ ↩2
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Brewster, B. C., Gould, R. E., & Brander, R. W. (2019). Estimations of rip current rescues and drowning in the United States. Natural Hazards and Earth System Sciences, 19(2), 389–397. https://doi.org/10.5194/nhess-19-389-2019 ↩