The worst hurricanes in US history are the storms that took the most lives and did the most damage, and each one exposed a specific gap in how people prepared. Galveston had no warning. New Orleans had levees that failed. Puerto Rico had a recovery that ran for months. Learn what went wrong in each storm, and you get a short list of things your family can fix before the next one.
You may live on the Gulf Coast, along the Atlantic, or far inland where hurricane rain still arrives. You may have ridden out storms before, or you may be new to hurricane country. Either way, the record gives you a ranking built on accepted figures, one lesson per storm, and a plan that fits a three day, one week, or long term disruption.
Start by looking up your evacuation zone on your county emergency management website. Write it on a card and put it on the fridge. That one letter or number tells you whether storm surge is your main threat, and most of the lessons from these storms come back to it.
The Deadliest of the Worst Hurricanes in US History
Know which storms killed the most people, and you know which hazards to plan around first. The death tolls point to water again and again. Ranked by accepted counts, the order runs Galveston, Maria, Okeechobee, and Katrina. The costliest storms come next, and they tell a different story.
Galveston, 1900: The Storm Nobody Saw Coming
The Galveston hurricane came ashore on September 8, 1900, as a Category 4 storm on the Texas coast. It killed an estimated 6,000 to 12,000 people, and 8,000 is the figure most historians use. It remains the deadliest natural disaster in the nation's history.
Galveston sat on a barrier island whose highest point was under 9 feet above sea level. A storm surge of about 15 feet covered the city. Forecasters in Cuba had warned that the storm was heading into the Gulf. The US Weather Bureau expected it to turn north instead. By the time residents saw the water rising, it was too late to leave the island.
Okeechobee, 1928: When the Lake Came Over the Dike
The Okeechobee hurricane made landfall near West Palm Beach, Florida, on September 16, 1928, as a Category 4. The deadliest flooding happened miles inland. Wind drove the water of Lake Okeechobee over a low mud dike on its southern shore. The flood swept through farm towns such as Belle Glade and Pahokee.
The official count is at least 2,500 deaths, and many historians put it above 3,000. The number is disputed because most of the dead were Black migrant farmworkers who were never fully counted. Hundreds were buried in mass graves. The federal government later built the Herbert Hoover Dike around the lake.
Katrina, 2005: The Levees Gave Way
Hurricane Katrina made landfall in southeast Louisiana on August 29, 2005, as a Category 3. It struck the Mississippi coast the same morning with a surge of more than 25 feet. In New Orleans, levees and floodwalls failed in dozens of places, and about 80 percent of the city flooded.
Death counts range from about 1,400 to 1,833, depending on how deaths after the storm are tallied. Many of the dead were older adults. Tens of thousands of residents had no car, and many were still in the city when the water came.
The documentary Trouble the Water shows those days from inside the Ninth Ward of New Orleans. It is built on home video shot by a young couple who stayed, rode out the flood with their neighbors, and then worked to get everyone out.
Maria, 2017: The Toll After the Wind
Hurricane Maria struck Puerto Rico near Yabucoa on September 20, 2017, as a strong Category 4. The storm destroyed the island's power grid. Some communities went close to a year without reliable electricity.
The first official death count was 64. A George Washington University study later estimated 2,975 deaths in the six months after landfall, and Puerto Rico adopted that figure. A Harvard study estimated even more. Most of those deaths came in the weeks after the storm, when people lost access to dialysis, oxygen, refrigerated medicine, and clean water.
The Costliest Storms and the Hazards Behind Them
See where the money was lost, and you see which hazard threatens your kind of home. We sort the hazards of hurricanes into five: storm surge, wind, rainfall flooding, tornadoes, and rip currents. Among the worst hurricanes in US history, the five costliest each came down to one or two of these. Dollar figures are given at the time of the storm, with a rough value in today's money. The lessons drawn from these losses follow.
Katrina: Surge and Failed Levees
Katrina caused about $125 billion in damage, roughly $200 billion today. That makes it the costliest storm on record. The main hazard was storm surge. We define storm surge as the rise of seawater above the normal tide, pushed ashore by a hurricane's winds. In New Orleans, the surge found weak points in the levees and flooded a city that sits largely below sea level.
The documentary Hurricane on the Bayou shows another part of that story. It follows the loss of the Louisiana wetlands that once slowed storm surge before it reached the city, and what Katrina did when that buffer was thin.
Harvey: Rain That Would Not Leave
Harvey hit Texas near Rockport on August 25, 2017, as a Category 4. Then it stalled over the Houston area for days. One gauge near Nederland, Texas, recorded more than 60 inches of rain, the most ever measured from a tropical cyclone in the United States. Damage came to about $125 billion, roughly $160 billion today. Most of it came from rainfall flooding far from the beach.
Ian: Surge on Florida's Gulf Coast
Ian made landfall near Cayo Costa, Florida, on September 28, 2022, as a Category 4 with 150 mph winds. Its surge reached 10 to 15 feet above ground near Fort Myers Beach. Damage reached about $113 billion, roughly $120 billion today. Ian killed about 150 people, and drowning in storm surge was the leading cause of direct deaths.
Sandy: A Storm Measured in Miles
Sandy came ashore near Brigantine, New Jersey, on October 29, 2012. By then it was no longer officially a hurricane, and its winds were about 80 mph. Its size made the difference. Tropical-storm-force winds spread across roughly 1,000 miles and pushed a surge into New York Harbor that flooded subway tunnels and coastal neighborhoods. Damage reached about $65 billion, roughly $90 billion today.
Andrew: Wind at Full Strength
Andrew struck Homestead, Florida, on August 24, 1992, as a Category 5 with winds of about 165 mph. It destroyed more than 25,000 homes and damaged more than 100,000 others in Miami-Dade County. Damage reached about $27 billion, roughly $60 billion today. Wind did most of the harm. Roofs peeled away, windows burst, and then the rain poured inside.
What Each Storm Taught Us
Take one lesson from each of the worst hurricanes in US history, and you get a checklist that covers warnings, evacuation, building, and recovery. Each lesson pairs with something you can do this weekend. The last step is turning these lessons into a written family plan.
Missed Warnings
Galveston: trust the forecast. Galveston had no reliable warning, and today you do. The National Hurricane Center issues a hurricane watch about 48 hours before tropical-storm-force winds are expected and a warning about 36 hours before. Buy a NOAA weather radio with battery backup and turn on emergency alerts on your phone. The radio keeps working when the power and the cell network fail. Then decide now what a warning means for your house, so you can act the moment you hear it.
Storm Surge
Ian and Sandy: leave the surge zone. Ian showed that a strong house is no shelter from rising water. Sandy showed that a storm's category measures wind, not surge. Emergency managers put it plainly: run from water, hide from wind. If your home is in an evacuation zone, plan to leave when the order comes. If it sits outside the zone and is built to code, sheltering in place is usually the safer choice, and it keeps the roads clear for the people who must go.
Evacuation Without a Car
Katrina: plan a ride before you need one. If you do not drive, register now for your city or county assisted evacuation program and learn your pickup point. If you have a car, offer a seat to a neighbor who does not. A household without a car often knows the block best, and those neighbor ties become the ride out.
Weak Construction
Andrew: building codes save houses. Investigators after Andrew found roof sheathing held on with staples and roofs with no straps tying them to the walls. Florida answered with a statewide building code that took effect in 2002. Find the year your home was built and check for hurricane straps, a sealed roof deck, and impact-rated windows or shutters. Each upgrade keeps the roof on, and a roof that stays on keeps the rain out.
Failed Levees and Dikes
Okeechobee and Katrina: a barrier lowers risk. Both disasters came when a wall built to hold water failed. If you live behind a levee or below a dam, check your flood risk on the FEMA Flood Map Service Center. Then price a flood insurance policy, since standard homeowners insurance does not cover flooding. Most new flood policies take 30 days to start, so buy before the season begins.
Stalled Rain
Harvey: inland homes flood too. Harvey flooded homes miles from the coast and outside any surge zone. A stalled storm keeps raining on the same ground for days. Learn the low roads between your home and higher ground, and turn around at any flooded crossing. Just 12 inches of moving water can float a car.
Long Recovery
Maria: plan for weeks, not days. Most of Maria's deaths came after the wind was gone. If anyone in your home depends on power for oxygen, dialysis, or refrigerated insulin, ask the doctor for a written backup plan and a list of shelters with medical power. This is why preppers lay in water, shelf-stable food, and medicine for at least one week. Survivors of Harvey, Irma, and Maria describe those long weeks in their own words in our Atlantic Hurricane Season 2017 survival stories.
Preparing for the Next One
Turn these lessons into three ordered steps, and your family gets a plan that covers before, during, and after the storm. The worst hurricanes in US history failed people at every stage, so the plan covers every stage too. The first step lays the foundation for the other two.
Step 1: Build the Foundation
Start with the basics of hurricane preparedness: water, food, medicine, light, a radio, and copies of key documents in a waterproof bag. Our full guide on how to be prepared for a hurricane walks through the kit, the house checklist, and the timeline from watch to warning. Stock enough for a three day start, then build toward one week. Once the supplies are in place, mark a date each spring to rotate the water and food so they stay fresh.
Step 2: Write the Evacuation Plan
Next, write down where you will go, how you will get there, and when you will leave. In October 2026, surf from former Hurricane Rachel left 13 Long Beach Peninsula homes red-tagged and dozens more under evacuation orders. If you live in a surge zone, choose an inland destination and a backup route. If you live in an apartment, ask the building manager about elevators and parking garages before the season starts. A small home packs out fast, so you can be on the road early. Your Family Hurricane Evacuation Plan lays out routes, go-bags, and plans for pets.
Step 3: Plan for the Weeks After
Finally, plan the recovery, because Maria and Katrina showed that the hardest days often come after the storm passes. Decide how you will cook, keep medicine cold, and stay in touch if the power is out for weeks. Photograph every room now, so an insurance claim has proof. Learn to shut off your main breaker and water valve. A large household needs more supplies, and it also has more hands for cleanup and more phones for news. Dealing with the Aftermath of a Hurricane covers cleanup, claims, and safe generator use step by step, so your prepping carries you through the long tail of the storm.
