What Internet Stays Up During a Hurricane? Why Underground Fiber Survives

Underground fiber-optic internet is the service most likely to stay connected during a hurricane, because it removes the failure mode behind most storm outages: aerial lines. Hurricane winds snap utility poles and drop trees onto overhead cable (the coax and copper strung pole-to-pole across most neighborhoods), while fiber buried in conduit sits below the wind entirely. When Hurricane Laura hit Southwest Louisiana in 2020 with 150 mph winds, what failed was overwhelmingly the infrastructure hanging in the air. If your internet line is underground and the equipment on each end has power, you still have a connection.

---

What Laura and Delta Actually Broke in 2020

Southwest Louisiana doesn’t have to imagine the worst case; we lived it. On August 27, 2020, Hurricane Laura came ashore near Cameron as a Category 4 with 150 mph sustained winds. The National Hurricane Center’s post-storm report ranks it among the strongest hurricanes ever to strike Louisiana, tied with an 1856 storm (and 2021’s Hurricane Ida) for the strongest Louisiana landfall on record by wind speed. Forty-three days later, Hurricane Delta made landfall near Creole as a Category 2, roughly 13 miles from where Laura hit, and re-broke much of what crews had just repaired.

Look at the public record of what actually failed, and a pattern jumps out:

• The power grid’s aerial backbone collapsed. Entergy reported that all nine transmission lines delivering power into the Lake Charles area were knocked out of service by Laura, and its Louisiana president described the work ahead as “almost a complete rebuild” of the transmission and distribution system serving Calcasieu and Cameron parishes. Restoration took weeks, as covered at the time by KPLC and other regional outlets.
• Cell networks went dark with it. In the days after landfall, the FCC’s Disaster Information Reporting System showed 76% of Calcasieu Parish’s cell sites out of service. Notably, most of those sites weren’t destroyed — FCC status reporting attributed the bulk of the failures to transport and power, meaning the lines and electricity feeding the towers failed, not the towers themselves.
• Anything strung on a pole shared the pole’s fate. Cable, phone, and aerial fiber lines came down with the poles and trees that carried or crushed them.

The lesson from 2020 isn’t that one brand of network is tougher than another. It’s that hurricane wind destroys what hangs in the air. Infrastructure that isn’t in the air doesn’t have that problem.

Why Aerial Lines Fail in Hurricane Winds

Aerial internet plant, whether it carries coax or fiber, fails in a handful of predictable ways:

That last point is the one people underestimate. After Laura, internet restoration in the hardest-hit areas wasn’t primarily an internet problem — it was a pole problem, and the poles belonged to a grid that needed weeks of reconstruction.

Aerial Coax vs. Aerial Fiber vs. Underground Fiber

Here’s how the three common ways of delivering internet compare when a hurricane comes through:

For a deeper side-by-side on speed, reliability, and how these technologies behave day to day (not just in storms), see our breakdown of fiber vs. cable internet for business.

What Underground Fiber Doesn’t Fix (Honest Caveats)

We’d rather under-promise here. Burying fiber removes the aerial failure mode — it does not make a network invincible, and nobody should tell you otherwise. The honest caveats:

• Your building still needs power. The fiber itself carries light, not electricity, but the equipment at your premises — the optical terminal and your router — runs on your power. A small battery backup or generator keeps them alive when the grid isn’t.
• The network core needs power too. Well-designed fiber networks keep their core electronics in hardened facilities with backup power, but a hurricane that takes the grid down region-wide stresses every system. Ask any provider how their core is powered — it’s a fair question.
• Buried plant has its own (much rarer) risks. Construction dig-ins, storm-surge erosion, and washouts in low-lying coastal areas can damage underground routes. These are real, but they’re localized and infrequent compared to wind shredding miles of aerial line at once.
• No one can promise a restoration timeline. After a major storm, restoration depends on what failed, road access, and crew safety. We won’t quote you a number of hours or days — and you should be skeptical of anyone who does before the storm has even formed.

The Local Angle: Buried Fiber in the Lake Charles Area

This is exactly why AOP built its fiber network underground. Our plant in the Lake Charles area is buried in conduit rather than strung on poles, and the network is operated locally — by people who live here, prep for the same storms you do, and don’t have to wait on a regional office three states away to make decisions after landfall. That’s a design argument, not a guarantee: we’re simply not exposed to the failure mode that took out most of the region’s connectivity in 2020.

You can see plans and pricing for homes and businesses on our fiber internet page, and if you’re not sure whether service has reached your street yet, here’s how to check fiber availability in the Lake Charles area.

Prepare the Rest of Your Stack Before the Season

Resilient internet is one layer of hurricane readiness, not the whole plan. Businesses in Southwest Louisiana should pair a buried-fiber connection with a small battery backup for the network equipment, a cellular failover path for card processing and phones, and tested cloud backups of anything that matters. We’ve written a full hurricane IT preparedness checklist for SWLA businesses that walks through all of it, in order, before June 1.

Frequently Asked Questions