South Carolina is running a statewide SC hurricane evacuation drill simulation today, Wednesday, June 10, from 8 a.m. to 3 p.m., and two of the five corridors being exercised cut through Horry County: U.S. 501 and S.C. 544. Watch for increased patrol presence. Speeding ticket alert.
The South Carolina Department of Public Safety is leading the drill in conjunction with the South Carolina Department of Transportation, the South Carolina Emergency Management Division and other members of the State Emergency Response Team. According to SCDPS, “no traffic lanes will actually be reversed during this exercise, and this simulation will not impede the flow of traffic.” Drivers can use 501 and 544 normally today. Crews and additional law-enforcement vehicles will be visible along the route, working from shoulders and roadsides rather than blocking through lanes.
The exercise covers all three major coastal regions of the state in a single day. The five corridors being walked through are Interstate 26, U.S. 21, U.S. 278, U.S. 501 and S.C. 544. The Grand Strand portion is U.S. 501 and S.C. 544. The drill is the system’s annual test. The reader’s annual test is a hurricane-prep checklist that should be reviewed before the season’s peak.
The Atlantic season opened nine days ago and runs through the end of November. The corridor exercise traditionally lands in the first or second week of June so that staging, command relays and equipment placement are rehearsed before any named storm enters the basin.
The SC hurricane evacuation drill is crucial for ensuring readiness in the event of a real storm.
Importance of the SC hurricane evacuation drill
What the exercise is, and what it is not
This is the 26th annual hurricane evacuation exercise in South Carolina. The program was built into the state’s hurricane response plan after the chaotic 1999 evacuation for Hurricane Floyd, when drivers spent hours stranded on coastal-bound lanes that should have been reversed.
The annual drill is a barrels-and-cones rehearsal, not a live reversal of traffic. SCDOT crews practice the physical placement of traffic-control equipment along shoulders and roadsides. Personnel from SCDPS, SCEMD and partner agencies rehearse the command, communications and staging steps that would be needed in a real evacuation. Actual lane reversal is never practiced live, because closing real evacuation routes for practice would create the kind of disruption the program exists to prevent.
The five corridors exercised today line up with the three major coastal target areas. Interstate 26 serves Charleston and the Lowcountry. U.S. 21 and U.S. 278 serve Beaufort County and Hilton Head. U.S. 501 and S.C. 544 serve the Grand Strand. SCDPS is the lead agency on the exercise; SCDOT crews place the equipment; SCEMD coordinates the statewide emergency response framework. Locally, Horry County Emergency Management, led by director Sam Hodge, supports the drill on the ground. No Horry-County-specific quote on the 2026 exercise was available at publication.
How the real reversal would work
When a hurricane forces a real evacuation, U.S. 501 and S.C. 544 do not look the way they look on a normal Wednesday.
According to the South Carolina Emergency Management Division, U.S. 501 is converted to four lanes flowing outbound from S.C. 544 in the Conway area westbound to U.S. 378. From there, traffic feeds onto U.S. 378 toward Interstate 95 and Columbia. S.C. 544 is reconfigured to push traffic outbound and merge into the U.S. 501 reversal at Conway. Under certain conditions, a secondary reversal can extend U.S. 501 from S.C. 22 to S.C. 576 to keep the corridor moving.
Two specific routes that Horry County drivers sometimes assume are reversal corridors are not. U.S. 17 is not reversed in the state plan; it is a connector and destination route. S.C. 22, the Conway Bypass, is also not reversed in standard operations; it feeds U.S. 501 rather than flipping its own direction of travel.
Once a real reversal is underway, drivers cannot exit the pattern at will. SCEMD warns the public never to enter a lane-reversal pattern unless directed by law enforcement, and all entry points are closed during setup. The state estimates lane reversals shave roughly three to four hours off a full coastal evacuation when the system is activated.
Who pulls the trigger
Only the sitting governor can order a real mandatory evacuation and lane reversal. That authority currently rests with Gov. Henry McMaster, and it remains with him through January 2027, when the next governor is sworn in.
The decision is not a forecast call. It is a discretionary call rooted in South Carolina’s emergency-management statutes and the State Hurricane Plan, made on the strength of National Hurricane Center briefings, SCEMD recommendations and storm-track confidence. Historically, the trigger has been a Category 2 or stronger storm tracking toward the South Carolina coast with a defined arrival window. SCDPS then executes the physical reversal.
South Carolina has used the lane-reversal system three times in the past decade. Then-Gov. Nikki Haley ordered an Interstate 26 reversal on Oct. 5, 2016 ahead of Hurricane Matthew, flipping the westbound flow from I-526 toward I-77. McMaster has used the authority twice since taking office: Hurricane Florence in 2018, when I-26 was flipped to carry all four lanes inland, and Hurricane Dorian in 2019, which triggered reversals on I-26 and U.S. 278 ahead of a Labor Day weekend approach to the coast. Outside those three activations, the system has been tested only by the annual drill — which is why the rehearsal continues every June regardless of how quiet or active the most recent season was.
What the 2026 forecast actually says
The 2026 Atlantic hurricane season opened June 1 and runs through November 30. Peak activity historically falls between mid-August and mid-October. Horry County sits inside the cone for storms tracking off Florida, the Bahamas or the Outer Banks.
The headline forecasts run below the long-term average. The National Oceanic and Atmospheric Administration’s 2026 Atlantic outlook calls for eight to 14 named storms, three to six hurricanes and one to three major hurricanes, with a 55 percent probability of a below-normal season. NOAA attributes the lean outlook to expected El Niño conditions, which produce upper-level wind shear that suppresses Atlantic hurricane formation. Some forecasters consider a “super El Niño” possible.
Colorado State University’s initial outlook calls for 13 named storms, six hurricanes and two major hurricanes, citing the same El Niño driver. AccuWeather projects 11 to 16 named storms. The 30-year averages run higher: roughly 14 named storms, seven hurricanes and three majors per season.
Below-normal is not a synonym for safe. Hugo struck in 1989. Hazel struck in 1954. Floyd hit in 1999. Florence hit in 2018. None of those seasons were statistical outliers, and each one rearranged a stretch of coast. The forecast changes the odds. It does not change the preparedness math for a county sitting on the Atlantic.
What Horry County residents should do this week
The drill on the road is a prompt for the drill at home.
– Know your zone. Horry County is divided into Zones A, B and C based on storm-surge risk, with Zone A on the easternmost coast and Zone C inland between U.S. 701 and S.C. 544. The interactive map at hurricane.sc lets residents type in an address and read back the zone.
– Plan two routes. Do not depend on one road. From the airport corridor through Surfside, S.C. 544 feeds U.S. 501 to Conway, then U.S. 378 to Columbia. From the central Grand Strand, U.S. 501 west is the spine. Residents north of Briarcliffe Acres typically use S.C. 9 to Interstate 95. Garden City and points south route to U.S. 17 south through Georgetown.
– Build a kit. One gallon of water per person per day for at least three days; three days of non-perishable food; medications; flashlights and batteries; a battery or hand-crank radio; documents in a waterproof container; cash; cell-phone chargers and a backup battery; pet supplies.
– Make a pet plan. Most general shelters do not accept pets. Identify a pet-friendly shelter or boarding option in advance and bring carriers, vaccination records and food.
– Register if you need help. The Horry County Office of Special Needs maintains a registry for residents who need transportation assistance or medical accommodation during an evacuation. Horry County Emergency Management can be reached at (843) 915-5150 or [email protected].
– Photograph your documents. Insurance policies, deeds, IDs, prescriptions and medical records belong in a cloud backup before a storm sits in the Atlantic, not after.
Real-time traffic information is available at 511sc.org and through the SCDOT 511 mobile app. The state’s hurricane portal at hurricane.sc carries zone maps, evacuation routes and shelter information. Horry County Emergency Management posts updates at @horrycountyemd on Facebook, X and Instagram.
The simulation ends at 3 p.m. today. Hurricane season runs another five and a half months. The corridor crews stand down tonight. The household checklist does not.
## Further Reading
SC hurricane evacuation drill – NOAA — 2026 Atlantic Hurricane Outlook: https://www.noaa.gov/news-release/noaa-predicts-below-normal-2026-atlantic-hurricane-season
SC hurricane evacuation drill – Colorado State University — 2026 Atlantic Forecast: https://engr.source.colostate.edu/researchers-predicting-somewhat-below-average-atlantic-hurricane-season-for-2026/
SC hurricane evacuation drill – WMBF News — Statewide hurricane evacuation exercise may cause minor traffic delays in Horry County: https://www.wmbfnews.com/2026/06/10/statewide-hurricane-evacuation-exercise-may-cause-minor-traffic-delays-horry-county/
SC hurricane evacuation drill – The Sumter Item — SCDOT partners with SCDPS in statewide hurricane evacuation exercise: https://www.theitem.com/stories/scdot-partners-with-scdps-in-statewide-hurricane-evacuation-exercise,443825
SC hurricane evacuation drill – SCEMD — Hurricane Traffic Management: https://www.scemd.org/prepare/know-your-zone/hurricane-traffic-management/
SC hurricane evacuation drill – SC Hurricane Guide — Evacuate: https://hurricane.sc/evacuate
SC hurricane evacuation drill – SCEMD — Know Your Zone: https://www.scemd.org/prepare/know-your-zone/
SC hurricane evacuation drill – Horry County Emergency Management — Evacuations: https://www.horrycountysc.gov/departments/emergency-management/hurricanes/evacuations/
SC hurricane evacuation drill – Horry County Emergency Management — Know Your Zone: https://www.horrycountysc.gov/departments/emergency-management/hurricanes/know-your-zone/
SC hurricane evacuation drill – SCDPS — 2025 Full-Scale Hurricane Evacuation Exercise: https://scdps.sc.gov/news/2025/060225
SC hurricane evacuation drill – Post and Courier — What to know as lane reversals begin in SC ahead of Hurricane Florence (2018): https://www.postandcourier.com/news/what-to-know-as-lane-reversals-begin-in-sc-ahead/article_b4501eb6-b5a9-11e8-953f-07e286e6d1dd.html
SC hurricane evacuation drill – SCDOT 511 traffic information: https://www.511sc.org
