Homeowners and emergency managers along the U.S. Gulf and Atlantic coasts face a split forecast heading into the 2026 hurricane season. Colorado State University’s April 9 outlook calls for 13 named storms, 6 hurricanes, and 2 major hurricanes, numbers that sit at or above the top of the range issued by NOAA’s Climate Prediction Center. NOAA, by contrast, assigns a 55 percent probability to a below-normal season, creating a gap between the two most-watched seasonal forecasts that complicates preparation decisions for millions of coastal residents.
Two forecasts, one ocean, divergent expectations
NOAA’s 2026 outlook projects 8 to 14 named storms, 3 to 6 hurricanes, and 1 to 3 major hurricanes. The agency leans toward a quieter season: 55 percent below-normal, 35 percent near-normal, and just 10 percent above-normal. El Niño is the primary driver behind that tilt, because the pattern tends to increase upper-level wind shear across the Atlantic basin, tearing apart storms before they can organize.
CSU’s initial forecast, issued April 9, lands at the aggressive end of that spectrum. At 13 named storms, the university’s number matches NOAA’s upper bound. At 6 hurricanes, it equals NOAA’s ceiling. And at 2 major hurricanes, it exceeds NOAA’s midpoint of the 1-to-3 range. The practical effect: CSU’s modeling implies higher landfall probabilities for the U.S. coastline than NOAA’s central estimate would suggest, even though both forecasts technically fall within the same broad envelope of possible outcomes.
Both groups classify seasons against the same 1991–2020 climatological averages of 14.4 named storms, 7.2 hurricanes, and 3.2 major hurricanes, as laid out in NOAA’s methodology page. By that yardstick, CSU’s forecast is slightly below the 30-year mean in total storms but close to average in hurricane counts. NOAA’s lower bound of 8 named storms, however, would rank as one of the quietest seasons in recent decades, while its upper bound would still come in below the long-term average.
Why the gap matters for coastal residents
The difference between 8 named storms and 13 is not academic. Each additional storm that forms raises the statistical chance that at least one will make landfall. CSU publishes state- and county-level impact probabilities using historical baselines stretching from 1880 through 2020, and those probabilities shift upward when the basin-wide storm count rises. A season with 13 named storms and 6 hurricanes would produce meaningfully different risk maps for Florida, Texas, and the Carolinas than a season with 8 storms and 3 hurricanes.
For insurers, local governments, and families deciding whether to reinforce shutters or stockpile supplies, the split creates a planning dilemma. Following NOAA’s below-normal guidance could lead to complacency. Following CSU’s higher numbers could mean spending on preparations that prove unnecessary if El Niño suppresses activity as NOAA expects. The safest approach for any household in a hurricane-prone area is to prepare for the higher estimate regardless of which forecast proves correct, because a single landfalling major hurricane can cause catastrophic damage even in an otherwise quiet season.
Emergency managers often resolve this tension by planning for a range of outcomes and focusing on vulnerability rather than raw storm counts. A community with older housing stock or limited evacuation routes may decide that even a below-normal season warrants aggressive outreach and drills. Conversely, a well-fortified coastal city might prioritize targeted investments, such as hardening critical infrastructure, while still urging residents to maintain basic supplies and evacuation plans.
Competing signals behind the numbers
The core tension between the two outlooks centers on how quickly El Niño’s influence will fade. NOAA’s probability split suggests the agency expects the pattern to persist through the peak months of August and September, suppressing storm development during the period that historically produces the strongest hurricanes. CSU’s higher numbers suggest its models anticipate a faster decay of El Niño conditions, allowing sea-surface temperatures and wind-shear patterns to return to levels more favorable for storm formation before the season’s peak.
Both forecasters are watching the same Atlantic and Pacific oceans. Sea-surface temperatures in the tropical Atlantic, particularly the so-called Main Development Region between Africa and the Caribbean, can either amplify or counteract El Niño’s suppressive effects. Warmer-than-average waters provide more energy for developing storms, while cooler waters can dampen activity even if wind shear is low. Subtle differences in how each group weighs these factors, or how quickly their models allow patterns to shift, can produce noticeably different seasonal totals.
CSU has scheduled forecast updates for June 10, July 8, and August 5, each of which will incorporate newer ocean and atmospheric data. If sea-surface temperatures in the tropical Atlantic remain elevated and El Niño weakens faster than expected, CSU’s numbers could hold steady or even rise. If El Niño strengthens or persists, the university’s next revision could move closer to NOAA’s lower range. NOAA typically issues a mid-season update in August as well, so both outlooks will be living documents through the heart of hurricane season.
Sorting strong evidence from open questions
The verified facts are clear on both sides. NOAA’s probabilistic ranges and seasonal classification thresholds come directly from the Climate Prediction Center and are summarized in its outlook graphic. CSU’s April 9 issuance date and update schedule are posted on the university’s public forecasting page. The 1991–2020 averages that both groups use as benchmarks are published in NOAA’s background methodology, which also explains how the agency defines below-normal, near-normal, and above-normal seasons.
What is less certain is the specific modeling difference that produces CSU’s more active outlook within the same broad environmental backdrop. Seasonal hurricane forecasts blend statistical relationships, such as how often El Niño years have historically produced quiet seasons, with dynamical models that simulate the atmosphere and ocean months in advance. Small changes in how a model handles wind shear, moisture, or ocean heat content can translate into several additional or fewer storms across an entire season.
Another open question is how climate variability beyond El Niño will shape 2026. Multi-year swings in Atlantic sea-surface temperatures, sometimes grouped under the Atlantic Multidecadal Variability label, can tilt the basin toward more or fewer storms for a decade or longer. Both NOAA and CSU account for these slow-moving background signals, but the relative influence of long-term warming versus natural variability remains an active research topic. That scientific uncertainty filters down into the seasonal numbers that homeowners see in headlines each spring.
How to use a split forecast
For coastal residents, the safest way to interpret this split forecast is to treat it as a reminder rather than a prediction to bet on. NOAA’s below-normal probabilities and CSU’s near-average hurricane counts both leave ample room for at least one damaging landfall. From a practical standpoint, that means checking insurance coverage, confirming evacuation routes, and assembling basic supplies well before the first storm forms, then adjusting specific plans as short-term forecasts become available.
For policymakers and businesses, the divergence underscores the value of flexible planning. Budgets for emergency operations, infrastructure repairs, and post-storm recovery can be structured with contingencies that scale up if early-season activity runs ahead of NOAA’s expectations, or down if El Niño appears to be firmly suppressing storm formation by mid-summer. Using both forecasts as boundary markers-rather than choosing one as “right”-can help decision-makers navigate a season that may yet surprise on the upside or downside.
Ultimately, the ocean will decide whether 2026 looks more like NOAA’s quieter scenario or CSU’s more active one. Until then, the split forecast is less a contradiction than a range of plausible futures, all of which demand that the most exposed communities remain ready for the storm that matters most: the one that actually comes ashore.
More from Morning Overview
*This article was researched with the help of AI, with human editors creating the final content.
