Case Study · Hurricane · 1989
Hurricane Hugo.
The evacuation worked. One shelter stood on the wrong ground.
September 21 and 22, 1989. Category 4 at Sullivan's Island, South Carolina. Most people on the barrier islands left in time, and the worst of the storm tide came ashore on a thinly settled stretch of coast. The lesson is in the details a plan gets wrong before the storm ever arrives.
Charleston County · September 21, 1989
What happened when Hugo reached the Carolina coast?
At 6 AM on Thursday, September 21, a hurricane warning went up from Fernandina Beach, Florida, to Cape Lookout, North Carolina. The forecast that morning gave Charleston a 30 percent chance of landfall.
By noon, most of the people who would leave the coast had already gone. Hugo strengthened through the afternoon and came ashore at Sullivan's Island around midnight, with estimated sustained winds of 135 to 140 mph.
Sep 22, 1989
Landfall, near midnight
Sullivan's Island
South Carolina
27
SC deaths, direct and later
~$7B
Damage, 1989 dollars
Category 4
Hurricane
Hugo was the costliest hurricane in the nation's record at the time, at roughly $7 billion. It pushed a storm tide near 20 feet into Bulls Bay, the highest the National Weather Service has on record for the U.S. East Coast. Between 1 and 1.5 million customers lost power for two to three weeks, and 26 of South Carolina's 46 counties were declared federal disaster areas. The death toll was far lower than a storm of that size could have produced, and the reasons why are the most useful part of the story.
The Science
Why was Hugo's storm tide so much higher north of Charleston?
Storm surge is ocean water pushed ashore by the wind
Picture blowing steadily across a long pan of water. The water piles up against the far edge. A hurricane does the same thing to the ocean over hundreds of miles, and when that pile reaches a shoreline it has nowhere to go but inland. The National Hurricane Center calls this rise storm surge, and adds the normal tide on top of it to get the storm tide, the actual water level people see.
Why the water was highest at Bulls Bay
Hugo's eye crossed the coast at Sullivan's Island, but the highest water came ashore to the north. The National Weather Service in Charleston recorded 19.8 feet at Bulls Bay, 15.0 feet at Isle of Palms, and 13.0 feet at Sullivan's Island. South of the eye, the water ran lower: 11.9 feet at Folly Beach and 10.4 feet in downtown Charleston.
A National Research Council review found that the right side of the eyewall crossed one of the least populated reaches of the South Carolina coast. The author judged it probably the greatest factor in why so few people died.
Why the wind reached Charlotte
Hurricanes weaken over land, but Hugo kept enough of its circulation to bring tropical-storm-force winds to Charlotte, about 200 miles inland. NOAA's survey team recorded gusts of 90 mph at the Charlotte control tower before it was evacuated, and wind damage in Mecklenburg County passed $500 million.
Timeline
How did Hugo unfold, from the watch to the weeks without power?
01
The Watch
Wednesday, September 20. Through the day the forecast track bends north. At 6 PM a hurricane watch goes up from St. Augustine, Florida, to Cape Hatteras. At 11 PM Charleston County officials recommend evacuation.
02
The Warning Day
Thursday, September 21. The warning goes up at 6 AM. The governor orders evacuation of barrier islands, beaches, and peninsulas, except the city of Charleston. By noon, 75 to 90 percent of eventual evacuees have left. Westbound traffic backs up on Interstate 26. Hugo reaches Category 4 by evening.
03
Landfall
Around midnight. The eye crosses Sullivan's Island. Storm tide nears 20 feet at Bulls Bay. In McClellanville, water breaks into the school being used as a shelter and rises about 6 feet inside. Hugo moves inland and brings damaging gusts as far as Charlotte.
04
The Long Dark
The weeks after. Between 1 and 1.5 million customers go without power for two to three weeks. More than a week after landfall, only a quarter of Charleston has electricity back. A Red Cross survey counts 9,302 homes destroyed, more than half of them mobile homes.
Those 9,302 destroyed homes were only the start. The same survey counted 26,772 with major damage and 75,702 with minor damage. For tens of thousands of households, the storm ended and a second problem began: where to live while the house was repaired or replaced. Our guide to living through displacement covers that stretch.
Human Decisions
Which decisions kept the toll low, and which ones nearly failed?
What worked
An evacuation order ahead of the warning
NOAA's survey team called the governor's voluntary evacuation order, issued in anticipation of the warning, highly successful. Charleston County recommended evacuation the night before. On high-risk Sullivan's Island and Isle of Palms, 96 percent of residents left.
Households that already had somewhere to go
Between 56 and 66 percent of evacuees in the surveyed areas went to the homes of friends or relatives. Only 2 to 13 percent used public shelters. Across the two Carolinas, more than 90,000 people used shelters and another 96,000 stayed with family or friends.
Leaving early in the day
Most evacuees left on Thursday morning, well before landfall that night. The observed evacuation times ran very close to what planners had calculated in advance, which meant the plans could be trusted.
What nearly failed
A shelter whose elevation was wrong on paper
The evacuation plan listed Lincoln High School in McClellanville at 20.53 feet above sea level. Its true base elevation was about 10 feet. Surge broke through a door, water rose about 6 feet inside, and children were lifted onto the rafters. Everyone survived. NOAA's recommendation afterward was plain: verify shelter and route data before a plan becomes final.
Orders that sounded like suggestions
Evacuation rates ran from 62 percent in Charleston to 81 percent in Mount Pleasant and the nearby islands. The National Research Council review found that more residents would have left if they had heard the official orders and understood them as orders rather than notices.
Wind damage far inland
Charlotte is about 200 miles from the coast, yet about 85 percent of its homes and businesses lost power. NOAA's survey asked the Weather Service to develop policy and guidance for communicating hurricane wind threats well inland.
The cascade lesson
Hugo's low toll came from good planning and good luck, and the record is honest about how much was luck.
The same review that praised the evacuation also warned that, had the eyewall struck any of the major population centers inside the forecast range, many homes would have flooded with people still in them. A plan is only as good as its weakest recorded fact. In McClellanville that fact was a single elevation figure, and it was off by ten feet.
What Changed
What did the Hugo record ask planners to fix?
Check the ground under every shelter
NOAA's Natural Disaster Survey Report recommended that base information on shelters and evacuation routes be verified before plans become final. The McClellanville school showed why. A sturdy building does not help if the surge can reach it.
Warn the people who live far from the water
The same report asked the Weather Service to set policy on how to communicate hurricane wind threats to inland communities. Hugo showed that a coastal storm can knock out power across a city 200 miles inland.
A forest that did not come back the same
Hugo felled more than 1 billion board-feet of timber in the Francis Marion National Forest, roughly 70 percent of its lumber-quality trees. Major logging operations there ended for good. Some changes after a hurricane are permanent, and a recovery plan works better when it names them early. Our hazard-specific planning guide walks through writing a plan that expects the long tail, not just the storm night.
If It Happened Today
Would a Hugo landfall go differently now?
What is in place now
- Zones you can look up by address. South Carolina's emergency management division announces evacuations by predesignated zones, and residents of the eight coastal counties can find theirs by entering an address or using the state's app.
- Clear definitions of the water threat. The National Hurricane Center describes storm surge and large waves as the greatest threat to life and property along the coast.
- Known rules for flood coverage. Most homeowners and renters policies do not cover flood, and a new federal flood policy generally takes effect 30 days after purchase.
What is still true
- Luck still matters. The track that spared Hugo's population centers is not a track anyone can count on.
- A shelter is only as safe as its data. Any list of shelters is a record someone wrote down, and records can be wrong.
- The outage outlasts the storm. Hugo's winds passed in hours. The power stayed off for two to three weeks across a huge area.
What You Can Do Now
What should a coastal household take from Hugo?
Each action below comes from something Hugo's record shows directly. None of them costs much, and all of them are easier in June than on the morning a warning goes up.
Look up your evacuation zone by address
In Hugo, 96 percent of Sullivan's Island and Isle of Palms residents left. The National Weather Service advises finding out whether you live in a hurricane evacuation area through your local emergency management office, and South Carolina lets you look up your zone by address. Write your zone down where the whole household can see it.
Hurricane preparedness checklistArrange where you will stay before the season starts
Most Hugo evacuees went to friends or relatives, and very few needed a public shelter. The Weather Service advises deciding ahead of time, with family or close friends, where you will go and how you will reach each other. A standing arrangement with someone inland turns a hard decision into a phone call.
Planning for displacementTreat an evacuation order as an order
The National Research Council found that some Charleston residents stayed because they did not hear the order or took it as a notice. Decide now which words from local officials will send your household out the door, so there is nothing left to debate when the order comes.
Hazard-specific planningPlan for two to three weeks without power
That is how long up to 1.5 million customers waited after Hugo. If a generator is part of your plan, the CDC says to run it only outdoors, more than 20 feet from windows, doors, and vents, never in a home or garage even with doors open, and to keep a battery-powered or battery-backup carbon monoxide detector inside.
The first two weeksBuy flood coverage well before a storm has a name
Hugo produced more than $300 million in federal flood insurance claims in South Carolina alone. Most homeowners and renters policies do not cover flood, and a new federal flood policy generally takes effect 30 days after purchase. A policy bought when a watch goes up will generally not be in force in time.
The first 30 days of recoveryHurricane case study series
Hugo is one of six hurricane case studies in this series.
Hugo covers evacuation and shelter planning. Andrew covers building codes, Katrina covers levee failure, Sandy covers surge and evacuation compliance, Harvey covers flood maps, and Maria covers the long outage.
All hurricane case studiesSources
Citations and further reading
All sources accessed September 26, 2026.
- [1] National Weather Service, Charleston. Hurricane Hugo, September 21 to 22, 1989. Landfall, intensity, storm tide by location, deaths, damage, Francis Marion timber loss.
- [2] National Weather Service, Charleston. Hurricane Hugo: 25th Anniversary. Highest storm tide recorded on the U.S. East Coast; costliest hurricane on record at the time.
- [3] NOAA. Natural Disaster Survey Report: Hurricane Hugo, September 10 to 22, 1989 (1990). Watch and warning times, shelter use, McClellanville shelter, Charlotte winds, recommendations.
- [4] Baker, E. J. South Carolina: Introduction. In National Research Council, Hurricane Hugo, Puerto Rico, the Virgin Islands, and Charleston, South Carolina (1994). Deaths, homes destroyed, power outages, disaster declarations, flood claims.
- [5] Baker, E. J. Warning and Response. Same volume. Evacuation rates, timing, destinations, forecast timeline.
- [6] Powell, M. D. Meteorology. Same volume. Landfall winds and inland circulation.
- [7] National Weather Service, Wilmington. Hurricane Hugo. Charlotte power outage extent.
- [8] National Hurricane Center. Storm Surge Overview and Hurricane Hazards.
- [9] National Weather Service. Hurricane Preparedness: Before.
- [10] South Carolina Emergency Management Division. Know Your Zone.
- [11] FEMA National Flood Insurance Program. Buy a Flood Insurance Policy.
- [12] Centers for Disease Control and Prevention. Carbon Monoxide Poisoning Basics.