The 2026 Atlantic hurricane season officially opens today, June 1, and for the first time in several years, the nation’s top weather agency is telling coastal communities to expect relative calm. NOAA’s Climate Prediction Center, in its May outlook, projected just 8 to 14 named storms, 3 to 6 hurricanes, and 1 to 3 major hurricanes, all at 70 percent confidence. The agency put the odds of a below-normal season at 55 percent, near-normal at 35 percent, and above-normal at just 10 percent.
Those numbers mark a striking shift. In 2024 and 2025, NOAA issued outlooks warning of above-normal activity, and both seasons delivered. The 2024 season produced a well-above-average storm count, and 2025’s forecast was among the most aggressive NOAA had ever released. This year’s 55 percent below-normal probability is the highest the agency has assigned in years, and it traces to one dominant factor: El Niño.
El Niño is doing the heavy lifting
El Niño, the periodic warming of equatorial Pacific waters, reshapes weather patterns thousands of miles away. In the Atlantic, it ramps up vertical wind shear, the change in wind speed and direction between the ocean surface and the upper atmosphere. That shear acts like a blender on developing tropical systems, ripping apart clusters of thunderstorms before they can tighten into organized cyclones.
NOAA tracks El Niño through the Relative Oceanic Niño Index, or RONI, a metric introduced in late 2025 to replace the older Oceanic Niño Index. The RONI measures sea surface temperature departures in the Niño-3.4 region of the central equatorial Pacific. According to the agency’s ENSO strength probabilities, El Niño conditions are expected to persist through August, September, and October, the three months that historically account for the vast majority of Atlantic hurricane activity. As long as that holds, the atmospheric deck is stacked against storm formation.
The ocean has not gotten the memo
Here is the wrinkle that keeps forecasters cautious: the Atlantic itself is unusually warm. NOAA’s Optimum Interpolation Sea Surface Temperature product, known as OISST, blends satellite passes, ship reports, buoy readings, and Argo float profiles into daily global maps. Those maps have shown above-normal temperatures across broad stretches of the tropical Atlantic and the Gulf of Mexico for months. A separate high-resolution product from NOAA’s Coral Reef Watch program, which delivers 5-kilometer SST readings in near real time, confirms the same pattern at finer detail.
Warm water is the fundamental fuel for hurricanes. It feeds evaporation, which feeds thunderstorm development, which feeds the low-pressure engine at a cyclone’s core. In a typical El Niño year, that fuel goes largely unused because shear keeps tearing storms apart. But the margin matters. If El Niño weakens even modestly ahead of schedule, the shear relaxes, and all that stored ocean heat becomes available to any disturbance that wanders into the basin.
The CPC’s projected accumulated cyclone energy, or ACE, range reflects that tension. ACE combines storm count, intensity, and duration into a single index, and the 2026 window of 45 to 115 percent of the long-term median is wide enough to accommodate both a genuinely sleepy season and one where a handful of intense hurricanes push the total toward average. The CPC’s summary graphic lays out the full probability table.
What the outlook cannot tell you
Seasonal hurricane forecasts describe basin-wide activity. They do not predict landfalls. A below-normal season can still deliver a catastrophic strike on a single metro area, while a hyperactive season can send storm after storm harmlessly out to sea. Hurricane Andrew in 1992 arrived during a below-normal year and caused more destruction than dozens of fish storms combined.
The biggest source of forecast uncertainty this year is El Niño itself. ENSO predictions carry meaningful error bars, and the probability tables describe likelihoods, not locks. If Pacific cooling arrives faster than the models suggest, the shear suppressing Atlantic storms could ease during peak season. In that scenario, the warm SSTs already in place would stop being a footnote and start being a headline, potentially pushing storm counts past the upper bound of the 8-to-14 range.
There is also the question of rapid intensification, the process by which a storm’s maximum sustained winds increase by at least 35 mph in 24 hours. Research published in recent years has linked warmer ocean temperatures to a higher likelihood of rapid intensification, and the phenomenon has produced some of the most devastating landfalls in modern history. A quiet season by storm count does not rule out a single system that explodes in strength just before reaching the coast.
How 2026 compares to recent years
Context helps. The early 2020s featured a run of above-normal Atlantic seasons driven by record ocean warmth and the absence of El Niño. NOAA’s outlooks during that stretch repeatedly called for elevated activity, and the atmosphere largely cooperated. The return of El Niño in 2023-2024 tamped down activity for a time before La Niña conditions surged back and fueled the busy 2025 season.
Now, with El Niño re-established, the pendulum has swung again. The 2026 outlook is the most subdued NOAA has issued in several cycles, and it reflects a genuine shift in the large-scale atmospheric pattern. But the ocean has a longer memory than the atmosphere. Sea surface temperatures do not reset overnight, and the warmth accumulated over years of record-breaking global heat is still sitting beneath the Atlantic’s main development region, the corridor stretching from the west coast of Africa to the Lesser Antilles.
What coastal residents should actually do
A 55 percent chance of below-normal activity means a 45 percent chance of something else. That is not a reason to panic, but it is a reason to prepare. Emergency managers along the Gulf and Atlantic coasts plan for every season as though a major hurricane will make landfall in their jurisdiction, and households should adopt the same posture.
Practical steps have not changed: review evacuation zones and routes, especially if you have moved since last season. Confirm that homeowner’s or renter’s insurance covers wind and flood damage separately, since standard policies often exclude flood. Assemble or refresh a supply kit with water, medications, important documents, and phone chargers. If you live in a flood-prone area, check whether your community participates in the National Flood Insurance Program and whether your policy is current.
NOAA will update its seasonal outlook in August, when the picture of El Niño’s trajectory and Atlantic SSTs will be sharper. Until then, the science offers a clear-eyed summary: the atmosphere is working against storms this year, but the ocean is quietly keeping the door open. Respecting both sides of that equation is the smartest way to enter June.
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*This article was researched with the help of AI, with human editors creating the final content.
