Super El Niño Just Took a Huge Turn — And Nobody Knows What Just Happened

0:00 The ocean of South America is running hotter than anything in the modern record. And for a few weeks in October, it looked like that was the whole story. Then the Pacific suddenly stopped warming and people started saying the monster was dying. It wasn't. But while everyone was staring at the water, something nearly 20 m above the Arctic started to come apart. Now, two of the most powerful forces in our atmosphere are about to fight over the same winter. And nobody can tell you who wins. Let me start with the number because everything in this story comes back to it. In the middle of October, the patch of the Pacific that scientists used to measure El Nino hit 3.3° C above normal on the weekly readings. That is higher than any week in that record. Not slightly

0:46 higher. On one measure, it beat the previous weekly record by more than a full degree. In the world of ocean temperatures, that isn't a broken record. It's a record that got thrown out a window. Before we go further, you need to understand what that number actually means. Because most people hear 3° and shrug, 3° is a cool morning turning into a mild afternoon. But this isn't air. This is the surface of the largest ocean on Earth across a band of water thousands of miles long. Warming that much water by even a fraction of a degree takes a staggering amount of energy. warming it by more than three degrees above its normal state is like the planet running a fever it has never run before while we've been watching. And the fever is worse closer to land

1:34 off the coasts of Peru and Ecuador. In a region forecasters call Nino 1 + 2, the water was running more than 5° C above normal by mid-occtober. One respected climate scientist pointed out that it had already passed the record from 1983 and forecasts suggested it could approach six degrees. Water that warm, that close to a desert coastline, is the kind of thing that has historically turned dry riverbeds in northern Peru into torrance. The ocean isn't just warm. It's warm in exactly the places where warmth causes the most trouble. Here's the strange part, and it's what made October so confusing. Right as the records were falling, the main El Nino

2:21 region suddenly stopped warming. For days, the line on the chart just flattened out. Something had pumped the brakes on the hottest stretch of ocean on the planet. If you were watching social media at the time, you saw the reaction. People started saying the Super El Nino had peaked, that it was fading, that the whole thing had been overhyped. I'm going to tell you exactly what caused that pause because the real answer is the opposite of what those people assumed. But first, you need to see how fast this thing got here because the speed is part of the story. Rewind to the beginning of 2026. At the start of the year, the Pacific was coming out of a lania, the cool phase of the same cycle. Early forecasts called for an El

3:06 Nino to develop sometime in the second half of the year, and most of them labeled it moderate. Moderate, that word, didn't survive the summer. In June, the National Oceanic and Atmospheric Administration officially declared that El Nino conditions had arrived. At the same time, it said there was a 63% chance of a very strong event during the winter, one that would rank among the largest since reliable records began in 1950. Then the atmosphere started doing things nobody had seen before. In July, the Southern Oscillation Index, which tracks the air pressure difference across the Pacific, averaged -29.1. That was the most negative July on record. To put that in context, it was

3:52 roughly four times past the threshold normally used to say an El Nino is underway. By early August, Australia's weather bureau measured its relative Nino index above 2° for the first time since February 2016. By mid August, New Zealand's climate scientists were saying something they rarely say out loud. This El Nino had a good chance of becoming the strongest on record. Australian forecasters made a point that stopped me when I read it. The rate at which this event strengthened from the start of the year has no match in their records. Think about what that means. Strong El Nino usually build like a slow tide. This one came in like a wave. And when something in nature moves faster than every example in the history books, every forecast built on those history

4:38 books starts to carry an asterisk. Which brings me to a record that has been standing since 1902 on Australia's longunning relative index, which goes back more than a century. The highest monthly value ever measured was plus 2.65° set in November 1902. That record has outlasted two world wars, the space age, and every super El Nino you've ever heard of. 1982 came close. 1997 came close. 2015 came close. None of them took it. I'll tell you where this year stands against that number in a moment. But first, you need to know what the rest of the world's forecasting models think is coming. That's where the story gets hard to believe. In midocctober,

5:24 Columbia University's Climate Institute gathered 27 separate forecast models. 16 of them simulate the physics of the ocean and atmosphere directly. 11 are statistical, built on patterns from the past. Every one of the 27 forecast a very strong El Nino lasting through the end of this year and into early next year. Not most of them, all of them. On average, they put the main El Nino region around 3 and a half degrees above normal heading into winter. The World Meteorological Organization went further. Its late October seasonal update projected the October through December average near 3.7°, peaking around December. Then it posted a line on social media that should give

6:10 anyone pause. It said this El Nino was forecast to exceed the scale of the charts it uses for global monitoring. Not that it might break a record, that the charts weren't built to show it. Another climate analysis lined up 14 seasonal models against the five strongest El Nino ever observed. Every single model run peaked above the 2015 record. The average projected margin over that record was about 1.3 degrees. That margin alone is bigger than the entire gap between the strongest and the fifth strongest El Nino of the last 150 years. So here is where we stand against 1902. The models aren't asking whether that record falls. They're asking by how

6:56 much. One analysis put the odds of a record peak this year above 90% on the traditional measure and around 77% on the stricter relative measure that adjusts for the warming of the oceans overall. So the 124 year old number looks to be living on borrowed time, but the experts aren't fully agreed. Remember that phrase because it will matter more than any record by the end of this video. Now back to the pause. the moment in October when the warming stalled and people said El Nino was dying. Here's what actually happened. In early October, a powerful burst of wind swept across the tropical Pacific from west to east and lasted about 9 days.

7:41 Scientists call it a westerly wind burst. Normally, the trade winds blow the other way from east to west, piling warm water up near Indonesia and Australia. During El Nino, those trade winds weaken and the warm water slashes back east towards South America. A westerly wind burst is like a giant shove in that same direction. It's one of the main engines that grows in El Nino in the first place. Picture a bathtub. Push the water hard toward one end and it doesn't just move. It piles up and the extra water has to go somewhere beneath the surface. That shove sends a pulse of warm water racing east. A little like a wave traveling down a rope. Scientists call it a Kelvin wave. It travels under the surface where you can't see it and weeks later it

8:27 rises toward the top. So why did the surface stop warming while that wind burst was blowing? It stirred and churned the surface water in the central Pacific. That temporarily leveled off the temperature readings in the exact region everyone watches. But look one step east and the story flips. While the central region held flat around 3.3°, the regions closer to South America kept climbing. Nino 3 hit about 4.2°. Nino plus 2 hit about 5.3. The fever didn't break, it moved. One climate scientist who tracks these events closely warned people directly not to misread the flattening. He said the opposite of weakening was true and that this wind burst would likely reinforce

9:13 the El Nino and help it peak even higher in the coming weeks. That is the pattern of the great El Ninos. They stall, they gather, and they surge. The people calling the top in October were looking at one thermometer in a room full of them. If you live in North America, here's why you should care. A record El Nino doesn't stay in the Pacific. It reaches up and rearranges the jetream. the river of fast wind high overhead that carries storms across the continent. In a typical strong El Nino winter, the Pacific jetream extends farther east and dips farther south than usual. It aims storm after storm at California and across the southern tier of the United States from the southwest

9:59 through Texas and along the Gulf Coast toward Florida. The north, meanwhile, often ends up milder than normal because the storm track that usually delivers the cold has moved south. That's the textbook. And in a normal year, the textbook would be the end of the conversation. You'd plan for a wet south, a mild north, and a California winter with plenty of rain. And you'd probably be mostly right. But this isn't a normal year. And in a minute, I'll show you exactly why the textbook may get torn up this time. First though, there's a part of this story that has been playing out in the Atlantic, and it ended in a way almost nobody expected. For most of this year, the Atlantic hurricane season was one of the quietest ever recorded. By the September 10th peak, when the Atlantic usually churns

10:44 out storm after storm, there had been five named storms and not a single hurricane. Overall, storm activity was running about 91% below normal. The reason traces straight back to the Pacific. A strong El Nino strengthens the winds high over the Atlantic, and those winds act like a blade across the top of a developing storm. Weather.com reported that Atlantic wind shear from July onward was the strongest for that time of year since 1979. Picture someone trying to build a tall tower of blocks while somebody else keeps swatting the top layer sideways. A hurricane needs to stack itself up tall and organized. Shear keeps knocking the top off. So on September 11th, the

11:32 Atlantic broke the satellite era record for the latest first hurricane. That record had been set by Hurricane Gustaf in 2002 and matched by Hurricane Humber in 2013. Then the Atlantic kept going. September 21st passed. October arrived. For the first time since satellites began watching the tropics, the Atlantic reached October without a single hurricane, people started asking a question that hadn't been asked seriously in more than a century. Could the entire season end with no hurricanes at all? In the full record going back to 1851, that has happened only twice, in 1907 and 1914. And just as that possibility started to feel real, the Atlantic answered. In the first week of

12:19 October, a tropical depression formed in the Gulf of Mexico. It became tropical storm Isaiah, the ninth named storm of the season, and forecasters immediately warned it was headed toward the central Gulf Coast. Late on October 7th, Isaiah strengthened into a hurricane. Here's the detail I love because it captures the whole year. Depending on which recordkeeper you ask, Isaiah either broke or tied the all-time mark for the latest first Atlantic hurricane, a mark set in 1905. One count says it beat that record by a few hours. Another says it tied it exactly. Even the record for the quietest start in history came down to a matter of hours. There's a lesson hiding in Isas and it's the most important

13:04 thing for anyone who lives on the Gulf or East Coast. A quiet season is not a safe season. During the strong El Nino of 1992, the Atlantic stayed completely quiet until mid August. Then it produced Hurricane Andrew, a category 5 storm that devastated South Florida. El Nino changes the odds. It doesn't take the dice away. And earlier this season, a couple of tropical storms that never reached hurricane strength still cause serious flooding. A storm doesn't need a category number to put water in your living room. If following a story like this one, wherever the evidence actually leads is why you're here, subscribe. I'm going to keep tracking both of these oceans all winter and the next few weeks are going to matter because right now

13:50 we're getting to the turn in the title, the part that has forecasters genuinely unsure what happens next. It isn't happening in the ocean at all. go up past the clouds, past the jetream, past the altitude where airliners cruise. Nearly 20 miles above the North Pole in a layer of the atmosphere called the stratosphere, there's an enormous ring of wind that spins around the Arctic every winter. It's called the polar vortex. When it's strong and spinning fast, it works like a fence, keeping the coldest air on the planet locked up over the Arctic. When it weakens, wobbles, or breaks apart, that fence comes down and the frigid air can spill south into North America, Europe, and Asia. On October 25th, the winds of that vortex,

14:38 measured at the standard reference latitude of 60° north, were blowing at about 22 m/s, roughly 49 mph. 8 days later, on November 2nd, they had collapsed to about 5 1/2 m/s. That's just over 12 mph. In about a week, the vortex lost roughly 3/4 of its speed. On October 30th, the Climate Prediction Center called this a rare November disruption of the stratospheric polar vortex. Its guidance at the time pointed toward a transition into a major sudden stratospheric warming about a week later. That's right about now, a sudden stratospheric warming is exactly what it sounds like. The air high over the pole warms dramatically, sometimes by dozens

15:25 of degrees in a matter of days, and the vortex weakens, stretches, splits, or even reverses direction. And here's why the word rare matters. Major disruptions like this usually happen in the heart of winter in January or February after the vortex has had months to grow. A significant disruption in early November is unusual. The vortex is barely getting started for the season and it's already being knocked around. You might be wondering whether these two things are connected. The record El Nino below and the collapsing vortex above. Some research suggests they can be. During strong El Nino winters, the deep low pressure system that normally sits over the North Pacific tends to grow stronger. That can send extra waves of energy shooting upward into the

16:12 stratosphere where they can push on the polar vortex and weaken it. So, it's possible the fever in the Pacific is helping to destabilize the ice box over the Arctic. But I want to be careful here. Possible is not proven. And nobody can tell you for certain that this specific disruption was caused by this specific El Nino. What we do know is that both are happening at the same time, and that's the problem. Now, hold those two forces side by side because this is the collision in the title. El Nino on its own tends to push North American winters in one direction, wet and stormy across the southern tier and milder than normal across much of the north. A collapsing polar vortex tends to push in a very different direction.

16:57 Forecasters expect this disruption could flip what's called the Arctic oscillation into its negative phase. That's a pattern that makes it much easier for Arctic air to break loose and pour south, especially into the eastern United States and Europe. So, you have one force saying the northern half of the country stays relatively mild and another force saying the gates to the Arctic just swung open. The Climate Prediction Center said it plainly, "The possible stratospheric warming and the forecast negative Arctic oscillation could compete with the circulation patterns linked to El Nino, particularly over the eastern United States. The November outlook still favored above normal temperatures across substantial

17:42 parts of the country, but the agency added that this stratospheric signal is now adding uncertainty to the early winter outlook. When a government forecasting center uses the word uncertainty about a record El Nino winter, pay attention. This is where the forecast stops being a straight line and becomes a coin spinning in the air. And this is why that phrase from earlier matters more than any record. The experts aren't fully agreed. They agree the El Nino is historic. They agree the vortex is being disrupted. What nobody can tell you yet is how those two will interact over the next 3 months because we have almost no examples of a record strength El Nino meeting a major November vortex disruption. You can't

18:29 forecast from history when history doesn't have the page you need. But history does have something close and it's worth looking at because it shows what can happen when these forces team up. In the winter of 2009 to 2010, the Pacific had a moderate to strong El Nino. And at the same time, the Arctic oscillation dropped to some of the most negative values ever measured. El Nino supplied the moisture. A loaded southern storm track carrying Pacific and Gulf moisture across the country. The negative Arctic oscillation supplied the cold Arctic air pressed far south into the east. When the moisture met the cold, the result was a series of historic snows storms across the Mid-Atlantic in February 2010.

19:14 Washington, Baltimore, and Philadelphia were buried. People still call it snowmageddon. Read that combination again. A loaded southern storm track and cold air pushed south to meet it. That's what can happen when El Nino and a disrupted vortex work together instead of against each other. To be very clear, I'm not telling you that's what this winter will bring. 2010 was a different El Nino and a different vortex story, but it shows why forecasters are watching the eastern United States so closely right now. In a normal strong El Nino winter, the east might expect a mild season with storms that mostly bring rain. In a winter where cold air keeps finding its way south, some of those same storms could arrive with very

20:00 different consequences. Now, let me close a loop I opened earlier because it's the most important warning in this whole video, and it comes from the last super El Nino. In 2015, an El Nino built toward record strength. The hype in California was enormous. The media gave it a monstrous nickname. After years of brutal drought, people across Southern California were told to expect a drenching winter, and many of them believed the rains were finally coming. The water was record warm. The textbook was clear. Strong El Nino meant a wet California winter. Southern California mostly stayed dry. Northern California did get substantial rain and snow that winter, but the soaking Southern California was promised largely missed.

20:45 The storms kept tracking farther north than the textbook said they should. The most famous El Nino of its generation became a story about a promise the ocean never actually made. That's the single most important thing to understand about a super El Nino. It loads the dice. It doesn't roll them for you. A record warm Pacific raises the odds of certain outcomes, but the actual weather on any given week in any given city still depends on dozens of other moving parts. This year, a polar vortex just came apart in November. And that's one of the biggest moving parts there is. So when someone tells you with total confidence exactly what this winter will bring to your town, ask them whether they've accounted for the second force in the room. Most haven't. The honest

21:32 forecasters are saying something more uncomfortable. The range of possible outcomes for this winter just got wider, not narrower. So what are the honest forecasters actually expecting? Start with the confident part. The Climate Prediction Center said in early October that there was a greater than 83% chance of a strong to very strong El Nino persisting all the way through January to March of next year. No's own experimental forecast system at its geoysical fluid dynamics laboratory suggests this historic event is nearing its peak and could start weakening by early winter. And here's the line from that same forecast that matters most for anyone in North America. Even as El Nino

22:17 may weaken through the winter, its impacts may continue to intensify, including over parts of the United States. Think about that for a second because it's counterintuitive. You'd expect the effects to fade when the ocean starts to cool, but the atmosphere has a lag. A pot of water doesn't stop boiling the instant you turn the burner down. The heat this ocean has poured into the atmosphere for months has already reshaped wind patterns across the hemisphere. And those patterns don't snap back overnight. The ocean may peak in November or December. The weather it's set in motion could keep building well into January, February, and even March. For California and the West Coast, the confident read is a stormy winter. Some meteorologists who study

23:03 California closely are warning about the potential for historic storms and coastal flooding, a record warm Pacific, a strengthened jetream, and the kind of high surf and storm surge that strong El Ninos have brought to the coast in the past all point the same way. But remember, 2015, wet in Northern California and dry in Southern California is a real possibility, not just a cautionary tale. The broad shape is clear. The exact landing spot is not. For the southern tier of the United States, from the desert southwest through Texas to the Gulf Coast and Florida, the El Nino playbook calls for a wetter and stormier winter than usual. Some of that has already shown up this

23:49 fall. For the northern plains and the upper Midwest, the El Nino playbook says milder. The polar vortex says don't count on it. And for the east, the honest answer right now is that this region sits at the exact intersection of the two forces, which makes it the hardest part of the country to call this winter. Then there's the rest of the planet because an El Nino this size doesn't stop at any border. In past strong El Nino, Eastern Australia, Indonesia, and parts of southern Africa have tended to run drier than normal. The western coast of South America has tended to run wetter, sometimes catastrophically so. During the 2015 event, Australia had one of its driest Septembers on record, and there's a

24:36 global temperature story underneath all of it. Climate analysts have already said 2026 is on track to be among the warmest years ever measured. Historically, the year after a big El Nino peak is often when global temperatures spike because the ocean releases its stored heat into the air. We saw it after the 2015 event, which helped make 2016 a record year. We saw it again with the El Nino of 2023 and 2024. The World Meteorological Organization has already warned that this event's impacts will be felt well into 2027. Now, I want to give you the honest summary because this is where a lot of coverage goes wrong in both directions. One version of this story

25:22 says the super El Nino is going to wreck the winter, that disaster is coming, that you should panic. That isn't what the evidence says. Another version says it's all hype. The El Nino peaked in October. Nothing to see here. That isn't what the evidence says either. The truth is narrower than both and more interesting. The truth is that the ocean has done something without precedent in the modern record. The models agree it isn't finished. The Atlantic's long silence finally broke with a hurricane that arrived later than any in more than a century. And above all of that, the polar vortex has been knocked off balance at a time of year when that almost never happens. Each one of those things alone would be a headline. All

26:08 four happening at once is what makes this winter so difficult to call. And that's the real meaning of the title. When I say nobody knows what just happened, I don't mean nobody understands the science. The science is excellent. Scientists know exactly what a westerly wind burst does. They know what a sudden stratospheric warming is. They know how El Nino bends the jetream. What nobody knows is how a record-breaking version of one interacts with an early season version of the other because we've never been able to watch these two forces meet at this scale at this time of year with modern instruments. We're not watching a rerun. We're watching a first episode. So, here's what I'll be watching over the next few weeks and what you can watch,

26:54 too. First, the weekly El Nino readings, especially whether the central Pacific starts climbing again after that October pause. The way the wind burst suggests it should. If those numbers push past 3 1/2°, that 124 year old record from 1902 is likely finished. Second, the polar vortex. If the disruption becomes a full major sudden stratospheric warming, cold air outbreaks in the second half of November and into December become more likely, especially in the east and in Europe. Effects at the surface often take a couple of weeks to show up after a disruption in the stratosphere. So, the clock is already running. Third, the jetream over the Pacific. If it starts

27:40 extending toward California with a steady train of storms, the El Nino pattern is taking charge. If it buckles and loops north while cold air pours down the middle of the continent, the vortex is winning that round. And here's the scenario that worries forecasters most. The one that turned 2010 into a winter people still talk about. Both forces get their way at the same time. and the southern storm track loaded with Pacific moisture and the cold air pushed far enough south to meet it. That doesn't have to happen. It may not. But for the first time this season, it's on the table. If it does, the parts of the country that were expecting a mild, rainy, Elino winter could find out the hard way that the textbook only had half

28:25 the story. If there's one thing to take from all of this, it's that the atmosphere is a single connected system. Even though we talk about it in pieces, heat in the Pacific becomes windshar over the Atlantic. Wind shear over the Atlantic becomes a hurricane season that sleeps for 4 months and then wakes up in October. Energy rising from a warm ocean can reach the stratosphere and shake the polar vortex. and a shaken vortex can send Arctic air into a country that was told to expect a mild winter. Nothing up there happens in isolation. Every record this year has been a domino. The ocean off South America is still running a fever, the hottest in the modern record. The water in the central Pacific paused, but it never cooled. And somewhere

29:11 nearly 20 m above the Arctic, a ring of wind that usually holds the cold at the top of the world has been knocked off its spin weeks before anyone expected. Two giants, one ocean, and one sky are about to fight over the same winter. The honest truth is that nobody knows yet which one gets the last word. I'll be watching that stretch of warm water, and I'll be watching that wobbling vortex. When one of them makes its move, you'll hear about it here first. If you want to see how this turns out, subscribe. Keep one eye on the ocean and the other on the sky. and I'll see you when the weather makes its choice.