In the middle of August 2024, the Atlantic went quiet. Storm activity stopped for nearly three weeks, the longest dormant stretch that late in a season in more than fifty years. It was easy to read that silence as a reprieve. It was not. Helene and Milton were still ahead, Milton went from tropical storm to Category 5 in under 24 hours, five hurricanes made U.S. landfall, and the season finished as the third-costliest on record at roughly $131 billion.
What makes 2024 instructive is that the seasonal forecast was right. NOAA's May 2024 outlook gave an 85% chance of an above-normal season and called for 17 to 25 named storms, 8 to 13 hurricanes, and 4 to 7 major hurricanes. The Atlantic produced 18, 11, and 5, near the middle of every range. An accurate basin-wide forecast still told no individual family whether their own house would be hit, or when.
The families who absorbed that season best were not the ones who read the forecasts correctly. They were the ones whose insurance, liquidity, and property decisions did not depend on the forecast at all. That distinction matters more than most people realize, and the place to start understanding it is roughly 8,000 miles from the Florida coast, in the equatorial Pacific Ocean.
What ENSO Actually Is
ENSO, the El Niño-Southern Oscillation, describes a recurring pattern of ocean temperature changes in the central and eastern tropical Pacific. It cycles through three phases: El Niño (warmer-than-average Pacific surface temperatures), La Niña (cooler-than-average Pacific surface temperatures), and neutral. Each phase typically lasts around 9 to 12 months, though some persist longer, and the broader cycle repeats every 2 to 7 years.
These temperature shifts alter global atmospheric circulation, and the Atlantic hurricane basin is one of the regions most affected.
How El Niño Suppresses Atlantic Hurricanes
During El Niño, warmer Pacific waters strengthen upper-level westerly winds across the Atlantic basin, increasing vertical wind shear, the difference in wind speed and direction between the lower and upper atmosphere. Hurricanes need vertically aligned, stable conditions to form and strengthen. Wind shear disrupts that structure, often preventing storms from organizing.
Historically, El Niño years have produced materially fewer U.S. hurricane landfalls than neutral or La Niña years. A frequently cited NOAA analysis of 1900-1997 hurricane landfalls found the probability of two or more U.S. hurricane landfalls drops to about 28% during El Niño, compared to 48% during neutral years and 66% during La Niña. That is a meaningful shift in probabilities. It is not protection.
How La Niña Increases Risk
La Niña is the opposite pattern. Cooler Pacific waters weaken upper-level winds over the Atlantic, reducing wind shear and creating a more favorable environment for storm formation. At the same time, La Niña tends to coincide with warmer Atlantic sea surface temperatures and reduced atmospheric stability. The result is not just more storms, but more storms that intensify.
During La Niña years, the probability of at least one major hurricane making U.S. landfall rises significantly, and many of the most destructive recent seasons occurred under La Niña or transitioning conditions.
What 2024 Actually Showed
The 2024 season is sometimes described as a forecast failure. It was not. The seasonal totals landed inside every range NOAA published in May. What diverged was the path through the season, and the path is what families actually live through.
ENSO conditions during the core of the season were largely neutral rather than strongly suppressive, and Atlantic sea surface temperatures were at or near record levels. That combination is precisely why forecasters called for a hyperactive season in the first place. The mid-August lull came from shorter-term factors, including Saharan dust, wind shear, and an unfavorable atmospheric pattern. None of those change a seasonal outlook. All of them change how a season feels while it is happening.
Then the pattern turned. Storms like Milton did not just form. They intensified rapidly, with wind speeds increasing by more than 35 mph in under 24 hours, meeting the National Hurricane Center's formal definition of rapid intensification.
Two lessons come out of that. A seasonal forecast is a statement about basin-wide activity, not about your address. And within a season, a quiet stretch carries no information about what comes next. Both are where planning mistakes begin.
The Behavioral Layer Most People Miss
Families do not misjudge hurricane risk because they are careless. They misjudge it because of how human judgment works. Kahneman and Tversky described this as the availability heuristic: we estimate probability based on how easily examples come to mind. After a major storm, risk feels higher than it statistically is. After a quiet period, it feels lower. Neither perception is reliable.
The FamilyVest approach is to recognize instinct, then build a plan that does not depend on it. We do not prepare for hurricanes based on memory. We prepare based on probabilities, balance sheets, and what would happen if the wrong scenario shows up at the wrong time. That is the difference between reacting to risk and managing it.
How to Read a Seasonal Forecast
Every spring, NOAA's Climate Prediction Center issues a seasonal hurricane outlook, updates it in early August ahead of the September peak, and expresses it as a probability of below-normal, near-normal, or above-normal activity, plus ranges for named storms, hurricanes, and major hurricanes. Private forecasters publish their own versions earlier. All of them are describing the same thing: how much total activity the basin is likely to produce.
None of them forecast landfall. NOAA states this in every release: the outlook is for overall seasonal activity and is not a landfall forecast. A basin can run below normal and still put a major hurricane over your county. It can run above normal and leave the Gulf Coast untouched. The seasonal count and your own exposure are separate questions, and only one of them is under your control.
"Below normal" also does not mean low risk. A single well-positioned Category 3 storm can cause more damage than an entire season of storms that never reach land.
The 2026 season
NOAA's updated outlook, issued August 6, 2026, favors a below-normal Atlantic hurricane season: a 75% chance of below-normal activity, with 7 to 13 named storms, 2 to 6 hurricanes, and 0 to 2 major hurricanes. That tightened the agency's May 2026 outlook, which put below-normal odds at 55% with 8 to 14 named storms, 3 to 6 hurricanes, and 1 to 3 major hurricanes. The driver is El Niño, which emerged in June and has strengthened each month since.
A quieter basin-wide season does not predict whether Florida, or any individual property, will be struck. Financial preparedness should therefore be based on a household's exposure, insurance coverage, deductibles, liquidity, and evacuation needs, not on the seasonal storm count alone.
What This Means for Your Financial Plan
Understanding ENSO does not change whether you need a hurricane plan. You do. What it changes is how you think about timing, preparation, and decision-making under uncertainty.
Insurance Coverage
Review your homeowner's, flood, and windstorm coverage well before the season begins. Most carriers impose binding restrictions once a credible storm threat emerges, and if you wait for the forecast to look concerning, you are often already too late.
Florida remains one of the most expensive insurance markets in the country. Average homeowner premiums now exceed $4,000 annually, with coastal properties often running $6,000 to $10,000 or more once flood and windstorm riders are layered in. Citizens Property Insurance, the state's insurer of last resort, cut rates 8.8% for 2026, but that reflects temporary claims improvement, not a structural shift in risk.
Equally important is carrier quality. Over a dozen regional insurers have gone insolvent in the past five years, and major national carriers have pulled back from high-risk zones. A lower premium from a carrier that folds during a claim is worse than no policy at all. For more on developing a comprehensive hurricane plan, see our guide on why Florida residents need a hurricane plan.
Emergency Liquidity
The standard recommendation is to set aside three to six months of living expenses in cash. For Florida homeowners, that baseline is incomplete. You also need to account for your hurricane deductible. In Florida, hurricane deductibles are calculated as a percentage of your dwelling coverage, with common options of 2%, 5%, or 10% of the insured value.
On a $1.5 million home, a 2% deductible means $30,000 out of pocket before coverage applies. At 5%, that is $75,000. If you cannot absorb that without selling investments under pressure, your liquidity plan is not aligned with your actual risk.
Property Decisions
ENSO is a short-term signal. Property ownership is a long-term commitment. The more important trends are structural: Atlantic sea surface temperatures are rising, rapid intensification events are becoming more common, and insurance costs are increasing while becoming less predictable. These are not one-year variables. They are 10-20-year forces.
For relocating families, this is part of the cost analysis that often gets underestimated. The relocation calculator on our site includes insurance cost comparisons, but those are averages. Your specific property's elevation, construction year, roof type, and proximity to water will drive your actual premium. Get real quotes before committing to a purchase.
When evaluating a coastal purchase, insurance should not be treated as a static expense. It should be modeled as a growing cost with potential availability constraints.
The Rapid Intensification Problem
Rapid intensification, defined by the National Hurricane Center as a wind speed increase of at least 35 mph within 24 hours, is the scenario that compresses decision timelines the most.
Recent research published in Geophysical Research Letters (2025) found that ENSO modulates not just overall storm counts but also the rate at which storms rapidly intensify. In a warmer Atlantic, even El Niño years may not reliably suppress the most dangerous rapid-intensification events as historical data would suggest.
This is where planning discipline matters. The real risk is not the average season. It is the scenario in which a storm strengthens quickly, shifts track late, and forces simultaneous decisions on evacuation, liquidity, and claims.
The Bottom Line
El Niño years tend to produce fewer Atlantic hurricanes. La Niña years tend to produce more. The relationship is real, and it is also becoming less reliable at the margins. The Atlantic is warmer than it used to be, rapid intensification is more common, and a suppressed season still produces storms that make landfall.
The correct response is not to adjust your level of concern each time an outlook is revised. It is to standardize your level of preparation. Review your coverage before the season opens on June 1 and again at every renewal. Verify that your liquidity covers your hurricane deductible, not just your monthly expenses. Confirm your evacuation plan while nothing is in the Gulf. ENSO is context. It is not a strategy.
If you want help evaluating how hurricane exposure fits into your broader financial plan, including insurance adequacy, emergency reserves, and risk management strategies for your family, start a conversation.
