For most of the past decade, the aurora borealis was a prize reserved for people willing to travel toward the poles, to Iceland, northern Scandinavia, Alaska or the Canadian territories. Over the recent stretch of heightened solar activity, that geography has loosened. Shimmering curtains of green and red have been photographed from places that almost never see them, including the southern United States, central Europe and parts of the Deep South, as powerful bursts from the sun push the lights far from their usual high-latitude home.
The reason lies in where the sun sits in its long-running cycle of activity. The star runs through a roughly eleven-year rhythm of calm and storm, and it recently passed the most turbulent stretch of the current cycle. That peak, and the disturbances that continue to follow it, can drive the kind of geomagnetic storms capable of dragging the auroral glow hundreds of miles toward the equator, occasionally putting it within reach of skywatchers who have never seen it before.
What actually lights up the sky
The aurora is not reflected sunlight or any kind of atmospheric fire. As the Wikipedia entry on the aurora describes, it is the visible result of charged particles from the sun colliding with gases high in the atmosphere. The sun constantly streams out a flow of electrons and protons known as the solar wind, and during eruptions it can hurl vast clouds of that material, called coronal mass ejections, directly toward the planet. When those particles reach Earth, its magnetic field funnels many of them toward the poles and down into the upper atmosphere.
There the particles slam into atoms and molecules of oxygen and nitrogen, briefly energizing them. As those atoms settle back to their normal state, they release the excess energy as light. Oxygen tends to glow green at lower altitudes and a deep red higher up, while nitrogen contributes blues and purples. The colors and shapes that result, arcs, rippling curtains, rays and diffuse glows, are a direct readout of which gases are being struck and how high in the atmosphere the collisions are happening.
Why the ring of light expands
On an ordinary night the aurora forms a ring, called the auroral oval, centered on each magnetic pole. Under quiet conditions that oval stays tight, hovering over high latitudes, which is why the lights are normally a polar spectacle. What changes during a geomagnetic storm is the amount of energy dumped into the system. A strong blast of solar wind or a well-aimed coronal mass ejection compresses and disturbs Earth’s magnetic field, and the auroral oval swells outward toward the equator on both hemispheres.
The stronger the storm, the farther the glow can reach. Space-weather forecasters rate geomagnetic storms on a scale from G1, minor, up to G5, extreme. During the most intense events the aurora can become visible across the middle latitudes and, on rare occasions, close to the tropics. That is the mechanism behind the recent sightings far from the poles: not a change in what the aurora is, but a temporary and dramatic expansion of where it appears.
Where the sun stands now
The sun reached the maximum of its current cycle, known as Solar Cycle 25, in October 2024, according to a joint determination by NASA and NOAA. That means the most active stretch has technically passed, and 2026 falls in the declining phase of the cycle, when the overall number of sunspots and major eruptions gradually eases. Data tracking that trend is published by the government’s space-weather forecasters through the solar cycle progression record maintained by NOAA’s Space Weather Prediction Center.
The declining phase does not mean the show is over. History shows that some of the largest geomagnetic storms arrive in the years after a solar maximum, when long-lived features on the sun’s surface send recurring streams of fast solar wind toward the planet. Activity has also continued to register in the current period; a coronal mass ejection that left the sun in early August 2026 swept past Earth and drove geomagnetic storming to moderate levels. So while forecasters expect fewer storms overall than at the peak, strong events that could still push the aurora unusually far south remain possible, and predictions on any given night carry real uncertainty.
How far south the lights can travel
The practical question for most people is how low a latitude the aurora can reach. During the strongest storms of the recent active period, the lights were reported from states well outside their normal range, and some of the most extreme historical events pushed auroras close to the equator. A famous storm in 1859, often called the Carrington Event, produced auroras seen in the Caribbean and reportedly bright enough for people to read by in the middle of the night. Nothing on that scale is forecast for any specific date, but the episode illustrates the ceiling of what a truly extreme geomagnetic storm can do.
For anyone hoping to catch a display far from the poles, the ingredients are consistent. A dark location away from city lights, a clear view toward the pole, and a night when forecasters are calling for elevated geomagnetic activity all improve the odds. Cameras, especially phones using a long exposure, often capture color the eye can barely detect, which is why many southern sightings first appear in photographs before observers realize the faint glow overhead is the aurora.
A window that will not stay open forever
The heightened odds of a far-flung aurora are tied to this particular stretch of the solar cycle. As the sun settles further toward its next quiet minimum in the years ahead, the frequency of the powerful storms that fling the lights southward is expected to fall, and the aurora will retreat toward its usual polar haunts. That makes the current period, with the peak just behind and the declining phase still capable of surprises, a comparatively favorable time to watch for the lights from lower latitudes. The northern lights have not moved. The sun, for now, is simply giving more people a chance to look up and see them.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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