Collection: What a "Super El Niño" Winter Means for Ski Season 2026–27
Winter forecasting rarely comes with this much certainty this early in the season. As of September 10, 2026, NOAA's Climate Prediction Center puts the odds of a very strong El Niño this winter above 90 percent, with a 69 percent chance it ranks among the strongest events on record since 1950. That is not typical seasonal noise. That is one of the clearest early signals meteorologists have seen heading into a ski season in decades.
If you are already booking lift tickets or planning a season of tours, this forecast matters more than the usual "it might snow more" headline suggests. Super El Niño winters rewrite where the snow falls, when it falls, and what kind of snow you get once it does. Here is what the data says, and what it means for how you plan your season.
What Makes This an El Niño Winter, and Why "Super" Matters
El Niño is a periodic warming of sea surface temperatures in the central and eastern Pacific Ocean. That warming shifts atmospheric circulation across the entire Northern Hemisphere, which is the mechanism that eventually decides how much snow lands on your favorite mountain months later.
Not every El Niño behaves the same way. NOAA classifies an event as "very strong" or "super" when the Oceanic Niño Index, a three-month measure of Pacific warming, crosses roughly 2.5 degrees Celsius above normal. As of NOAA's September advisory, sea surface temperature anomalies in the eastern equatorial Pacific had already exceeded 3.0 degrees Celsius, with the Niño 3.4 region, the benchmark zone forecasters watch most closely, sitting at 1.8 degrees Celsius above average in August and still climbing.
The last three events that reached "super" strength were the winters of 1982 to 1983, 1997 to 1998, and 2015 to 2016. Each one rewrote the snowpack story across North America, and not evenly. Mammoth stayed open into summer from 1997 to 1998. Other regions that same year barely got a season.
The NOAA Forecast for Winter 2026/27
Here is what the numbers actually say right now. NOAA's Climate Prediction Center issued an El Niño Advisory on September 10, upgrading its outlook to a greater than 90 percent probability of a very strong event through the fall and winter. More notably, forecasters put the odds at 69 percent that this event will exceed every El Niño on record dating back to 1950, based on the RONI measurement.
That combination, near certainty of a very strong event and a real chance of a historic one, is why this forecast is getting attention well outside of weather circles. For skiers, it means the regional patterns that typically show up in El Niño years should show up with more force this time.
California and the Southwest: usually the big winners. NOAA favors above-normal precipitation, with better than 50 percent probability, across coastal California and southern Arizona through the core winter months. This is the setup that buried the Sierra Nevada in 1997 to 1998 and again in more recent strong events. If the pattern holds, Tahoe, Mammoth, and the Wasatch in Utah are positioned to be the season's biggest winners.
Northern Rockies: usually get the short straw. NOAA's dry signal is concentrated over the interior, meaning Montana, Idaho, and northern Wyoming. Above-normal temperatures are favored across much of the West and the northern tier all winter, pointing to a thinner, less consistent snowpack than a typical season.
Pacific Northwest: uncertain on snow, not on warmth. Earlier maps had the coastal Northwest in the dry camp with the northern Rockies, but the latest outlook shifts that zone closer to equal chances for precipitation. Temperatures are still expected to run above normal all season, so totals could go either way, though the snow itself will likely run warmer and wetter even in a decent year.
Northeast and Mid-Atlantic: a mixed bag. Coastal New England tends to feel the warmth most, with rain events cutting into what should be prime powder windows, while interior zones can still see solid seasons depending on storm track.
International options worth watching. Japan's Hokkaido and parts of the southern Andes have historically outperformed during strong El Niño years, worth keeping on the radar if the domestic forecast looks thin where you usually ski.
None of this is a guarantee. NOAA is clear that a stronger El Niño raises the odds of these typical impacts; it does not lock them in for any specific mountain on any specific weekend. But when the signal is this strong this early, the historical patterns tend to hold more often than not.
What Resort and Backcountry Skiers Should Each Expect
The same forecast plays out differently depending on how you ski. At the resort level, thinner or later-starting natural snowpack in the drier regions usually means opening days slide later on the calendar and early-season terrain counts stay lower than skiers are used to. Snowmaking becomes less of a backup plan and more of the actual plan in those areas, so it is worth checking a resort's snow report and terrain percentages before locking in a December trip anywhere in the drier zone.
Backcountry travel gets more complicated in a different way. Inconsistent storm cycles, warm spells, and rain landing on existing snow can build weak layers inside the snowpack that are hard to see from the surface. That kind of layering is exactly what keeps avalanche forecasters busy through a strong El Niño winter, and it means the terrain and timing choices that worked two weeks ago might not be safe today. Checking daily avalanche advisories matters in any season, but it matters more in a winter built on this much variability.
Timing Matters as Much as Location
One thing the data consistently shows about super El Niño winters: the season rarely arrives on schedule. Snowpack tends to build slowly and unevenly through early winter, with the strongest signals for this event actually peaking between January and March 2027 rather than in December.
That has real consequences for trip planning. Early season terrain maps can look thinner than usual, and resorts in affected regions lean harder on snowmaking to open on time. If you are booking a December trip in a region expected to run dry, understand you may be skiing groomed snowmaking terrain rather than fresh natural snow. The safer play, based on how these patterns have unfolded historically, is to let January and February prove the season before locking in your biggest trips.
Variability is the other constant. Big storm cycles followed by warm spells and rain events, rather than one long consistent snow season, are the defining feature of a super El Niño winter. That is true for resort skiers watching terrain openings, and it is doubly true for backcountry travelers, since inconsistent storm cycles and rain-on-snow events can build tricky layering in the snowpack that keeps avalanche forecasters busy all season.
What This Means for How You Get Ready
Here is where the forecast stops being a weather story and starts being a practical one. A season built on a very strong, possibly record-setting El Niño is not going to hand you the same conditions from December through March. You are more likely to see warmer temperatures mixed with wetter, heavier snow, sometimes in the same week, sometimes in the same day.
That kind of season punishes a one-outfit approach to dressing for the mountain. A bluebird 45-degree morning on the groomers and a slushy, wind-driven afternoon storm both show up in an El Niño winter, often within hours of each other, and your kit needs to handle both without leaving you sweating through the first run or soaked through the last one.
That is the real takeaway from this forecast. The data points to a winter that rewards skiers who stay flexible on where and when they book, and who build a layering system versatile enough to handle temperature swings and wetter snow, rather than one heavy setup meant for classic cold, dry powder days. Obermeyer's collections are built around breathable shells and technical midlayers that you can add or shed as conditions swing, designed with exactly this kind of unpredictable, in-between weather in mind.
The mountain is going to throw a lot at you this season. The forecast is telling you that months in advance. What you pack for it is next.
FAQs
What is a Super El Niño?
A Super El Niño is a very strong El Niño event, meaning Pacific Ocean sea surface temperatures are running significantly warmer than normal, roughly 2.5 degrees Celsius or more above average using NOAA's Oceanic Niño Index. The winters of 1982 to 1983, 1997 to 1998, and 2015 to 2016 are the benchmark Super El Niño seasons on record.
How confident is NOAA in the 2026/27 El Niño forecast?
As of its September 10, 2026 advisory, NOAA's Climate Prediction Center puts the odds of a very strong El Niño this winter above 90 percent, with a 69 percent chance it ranks among the strongest events on record dating back to 1950. That level of confidence this early in the season is unusually high.
Which ski regions typically benefit most from El Niño, and which see less snow?
California, the Southwest, and Utah's Wasatch have historically seen the biggest snowfall gains during strong El Niño winters, while the northern Rockies, including Montana, Idaho, and northern Wyoming, tend to run warmer and drier with a thinner snowpack. The Pacific Northwest and Northeast fall somewhere in between, with outcomes that vary more by storm track.
