Understanding the Super El Niño

A powerful climate phenomenon is currently reshaping weather patterns across the globe: the Super El Niño. Scientists are closely watching the development, set to peak in November or December, as communities brace for the impacts.

Happening every two to seven years, an El Niño develops when trade winds over the Pacific Ocean weaken, allowing warm surface waters to move eastward. This changes atmospheric circulation (the movement of air across Earth's surface), radically altering typical weather patterns.

But a Super El Niño, like the one we're experiencing now, can cause dramatic changes in global weather. For example, the Atlantic Hurricane season has only seen one hurricane form in 2026, while tropical storms hammer Hawaii. While El Niño is a naturally occurring phenomenon, climate change is raising the stakes by amplifying the extreme weather it can create.

The Influence of El Niño

The ripple effects of a Super El Niño extend far beyond the Pacific Ocean, influencing almost every aspect of human life around the world, from agricultural production to public health. Powerful El Niños have happened before, most recently in 1982 - 1983 and 1997 - 1998. Some historians even theorize that the events of the French Revolution can be traced back to the Great El Niño of 1788 - 1793. Thankfully, historical record and decades of research have vastly improved our ability to forecast El Niño, allowing us to brace for what may come.

Currently, Oregon is expected to experience a warmer winter with unusual rain patterns that change how and where precipitation falls, resulting in a reduction in mountain snowpack. We depend on snow accumulation in the mountains to replenish our rivers through the spring and summer, creating risk for drought and conditions that are primed for increased wildfires. On the Oregon coast, higher sea levels caused by El Niño mean our communities may face increased flooding and erosion.

Weather patterns are complex, and it's important to acknowledge that a Super El Niño does not mean all the potentialities of weather extremes are a guarantee. But understanding El Niño gives us the opportunity to prepare and adapt.

Be Prepared

Climate phenomena like the Super El Niño remind us just how interconnected we are to our environment. We can't control shifting wind patterns in the Pacific Ocean, yet the repercussions will impact how we live here and across the planet. The uncontrollable only emphasizes the importance of the choices we make at home, underlining the need to strengthen our climate resilience and protect our natural world. Sign up for OEC's Grassroots Action mailing list and join us in taking action to do exactly that.

As we look to winter, peak El Niño events are still ahead of us; sign up for emergency notifications at OR-Alert and follow the state recommendations for individual preparedness .