King Tides, a Halloween Nightmare for Coastal Roads

As if El Niño, La Niña, hurricanes, and all the other weather phenomena we’ve had to learn about weren’t enough, now there’s another one to watch out for: King Tides. These exceptionally high tides can flood coastal roads and disrupt traffic through Halloween, Saturday, October 31.

For truck drivers, the risks go well beyond delayed deliveries. King Tides can flood roads even on sunny days, hide pavement damage beneath the water, and expose commercial vehicles to saltwater, which accelerates corrosion in mechanical and electrical components.

When the Sun and Moon Affect Our Roads

King Tides are the highest astronomical tides of the year. They occur when the positions of the Earth, Moon, and Sun combine to create a stronger gravitational pull on the oceans, particularly during certain new and full moon phases.

According to the National Oceanic and Atmospheric Administration (NOAA), these tides are natural and predictable. However, their effects can become more severe when combined with strong winds, high surf, and other conditions that push seawater toward the coast.

One of the most surprising effects is what’s known as sunny-day flooding. Seawater can spill onto streets and highways, sometimes backing up through storm drains, even when there’s not a cloud in the sky.

For the trucking industry, that means a road that looks perfectly safe could suddenly become flooded or face traffic restrictions around high tide.

California, Florida, and the Carolinas Among the Hardest-Hit Areas

California

California experienced significant coastal flooding during the final week of October. In Orange County, rising water forced closures along sections of the Pacific Coast Highway (PCH), particularly near Huntington Beach, Sunset Beach, and Seal Beach.

High tides also affected parts of Newport Beach and other Southern California coastal communities.

In Central and Northern California, coastal flood alerts extend into Halloween for parts of the San Francisco Bay, San Pablo Bay, and Monterey areas.

For truckers, the biggest concerns include oceanfront highways, commercial access roads, and routes used for local deliveries. Closures reported earlier in the week should be checked before each trip, since conditions can change as water levels rise and fall.

Florida

Florida is also experiencing one of its highest tidal periods of the year. Coastal areas of Miami-Dade, Broward, and Palm Beach counties are particularly vulnerable to flooding on streets and urban access roads.

The City of Fort Lauderdale has identified October 24–31 as one of its expected King Tide periods for 2026.

During these events, seawater can back up through storm drains and collect in low-lying areas, even without rainfall.

Truck drivers making deliveries near coastal businesses, port facilities, or waterfront neighborhoods should pay close attention to local high tide schedules and any traffic restrictions.

North Carolina

In North Carolina, powerful surf and elevated tides caused extensive damage to North Carolina Highway 12 (NC-12), a critical transportation route through the Outer Banks.

The North Carolina Department of Transportation (NCDOT) reported on October 26 that approximately 1,200 feet of pavement had been damaged near the Pea Island Visitor Center.

The stretch between the Marc Basnight Bridge and Rodanthe remained closed while crews worked to repair the roadway and rebuild protective dunes.

Officials also arranged limited-capacity emergency ferry service to maintain access to Hatteras Island.

Although conditions may improve heading into Halloween, commercial drivers should confirm that the highway has reopened and check for access restrictions before scheduling deliveries.

South Carolina and Georgia

In South Carolina, Charleston and other low-lying coastal communities remain vulnerable to flooding associated with exceptionally high tides.

The threat may continue through the final days of October, although tidal levels are expected to gradually decrease.

Georgia is also part of the Atlantic coastal region where elevated tides can affect local streets and waterfront access roads. However, major freight-route closures related to this particular event have not been sufficiently confirmed in the state.

Why King Tides Are Dangerous for Trucks

Even though commercial trucks sit higher off the ground than passenger vehicles, driving through flooded roads can cause serious damage.

One of the biggest concerns is saltwater exposure. Saltwater accelerates corrosion in truck frames, braking systems, axles, electrical connections, and the undercarriage of trailers. Damage may not become apparent until well after the vehicle has been exposed, particularly if it hasn’t been properly cleaned.

Another danger is what drivers can’t see beneath the water. Coastal flooding can wash debris onto roads, erode shoulders, and damage pavement. What looks like a shallow puddle could conceal deep potholes or unstable sections of roadway.

King Tides can also disrupt freight schedules. Flooding around high tide may force drivers to change routes, postpone deliveries, or find alternative access points to warehouses, businesses, and coastal facilities.

What Truck Drivers Should Watch for Through Halloween

Truckers planning trips through coastal areas of California, Florida, and the Carolinas should check tide forecasts and current road conditions before heading out.

Transportation officials advise drivers to avoid flooded roads, obey closures, and use alternate routes whenever water covers the pavement.

It’s also important to remember that high tide times vary by location. Flooding risks won’t be the same in every coastal community or throughout the entire Halloween weekend.

If a truck or trailer has been exposed to saltwater, drivers should follow the manufacturer’s cleaning recommendations, rinse affected areas with fresh water where appropriate, and inspect potentially damaged components.

For real-time traffic and road conditions, drivers can check Caltrans QuickMap, FL511, and DriveNC.

King Tides don’t need a storm to bring traffic to a standstill. With unusually high tides still affecting some coastal areas through Halloween, planning ahead and staying away from flooded roads will be essential to protecting drivers, trucks, and cargo.

Check the tide forecast for your location here.