A 75% Chance Of A Quiet Atlantic Is Not A 75% Chance Your Site Stays Dry

NOAA's updated August outlook puts the chance of a below-normal 2026 Atlantic hurricane season at 75%, up from 55% in May ^[1]. That is a real shift in the basin-wide picture, and it is also the moment when continuity plans quietly slip down the operating agenda, which is a misreading of what the number measures.

The forecast itself is coherent. NOAA now expects seven to 13 named storms, two to six hurricanes and no more than two major hurricanes ^[2], with El Nino, which can increase vertical wind shear over the Atlantic, given as the principal reason for the reduction ^[3]. Colorado State University's forecast points the same way, at nine named storms, four hurricanes and one major hurricane ^[4]. Two independent groups converging is useful information, and it is genuinely useful for insurers, emergency planners, energy companies and governments allocating resources across large regions ^[8].

What it does not do is tell you anything about your site. Seasonal outlooks estimate activity across an entire ocean basin and do not predict whether a hurricane will strike Houston, New Orleans or Tampa, and NOAA has said explicitly that a seasonal projection is not a landfall forecast ^[5]. Ken Graham, director of NOAA's National Weather Service, put the operational point plainly in the agency's annual forecast: "Although El Nino's impact in the Atlantic Basin can often suppress hurricane development, there is still uncertainty in how each season will unfold," adding that this is "why it's essential to review your hurricane preparedness plan now" ^[6].

The historical case is well known and worth restating for anyone drafting a risk memo. The 1992 Atlantic season produced only seven named storms, and one of them, Andrew, struck South Florida as a Category 5 hurricane and became one of the country's defining natural disasters ^[7]. Seven storms is the bottom of the range NOAA is forecasting for 2026 ^[17]. A season that lands at the low end of the projection is not a season without a catastrophe in it.

The mismatch is one of units. No resident or facility experiences accumulated cyclone energy, the metric used to capture the combined strength and duration of tropical storms; they experience a flooded building, an extended power outage, an evacuation order or a closed pharmacy ^[9]. Below normal describes expected Atlantic activity, not below-normal vulnerability for a particular city or neighborhood ^[9].

Two features of this season compress the response window further. The first two named storms of 2026, Arthur and Bertha, were examples of systems forming close to land, sometimes called homegrown storms, which can organize near the Gulf Coast, the Bahamas or the southeastern United States and shorten the interval between formation and landfall ^[10]. Layered on that is intensification speed: the National Hurricane Center defines rapid intensification as a gain of at least 35 mph in maximum sustained winds within 24 hours ^[11], and Climate Central research indicates that nearly one-quarter of Atlantic tropical cyclones that rapidly intensified between 1980 and 2025 did so at an extreme rate ^[12].

The preparedness advice most organizations pass along assumes capacity that not everyone has. Ready.gov tells households to know evacuation routes, register for alerts, assemble supplies and review insurance ^[13], all of which presume a car, cash for a hotel and no dependence on electrically powered medical equipment, accessible transportation or interpretation services ^[14].

Watch whether El Nino conditions hold through the peak of the season ^[3], whether more storms form close to shore as Arthur and Bertha did ^[10], and whether your own communications repeat NOAA's basin probability without the caveat NOAA itself attaches to it ^[5].