For sky watchers and aurora enthusiasts, September and October have often been some of the most
exciting months of the year. Strong geomagnetic storms frequently occur during the fall season,
producing brilliant northern lights and occasionally disrupting communications, satellites, and power
systems. Yet in 2026, many observers have noticed something unusual: the absence of major solar
storms during a period when they are commonly expected. While smaller solar events have still
occurred, this fall has so far lacked the kind of powerful geomagnetic disturbances that have become
familiar over the past decade.

Historically, some of the most significant solar storms have occurred during the fall months. One of
the most famous was the Halloween Solar Storms of 2003, a series of powerful solar flares and
coronal mass ejections that struck Earth between late October and early November. The storms
peaked on October 28-30, 2003, and included some of the largest solar flares ever recorded. The
event caused satellite disruptions, communication outages, GPS interference, power grid problems,
and auroras visible as far south as Texas and the Mediterranean. [en.wikipedia.org], [ncei.noaa.gov]

Other major fall events include the September 2017 Solar Storms, when an active sunspot region
unleashed multiple X-class flares and generated strong auroras across North America. More
recently, the May 2024 G5 Extreme Geomagnetic Storm, sometimes called the Gannon Storm,
became the strongest geomagnetic storm since the Halloween Storms of 2003. It produced
spectacular auroras seen across much of the United States and was classified as a G5, the highest
category on NOAA’s geomagnetic storm scale. en.wikipedia.org], https://svs.gsfc.nasa.gov/14835/ , [en.wikipedia.org]

One reason many experts expected strong storms during the fall of 2026 is that geomagnetic activity
often increases near the spring and autumn equinoxes. Scientists refer to this as the
“Russell-McPherron Effect,” where Earth’s magnetic field orientation can make it easier for solar
energy to couple with our planet’s magnetic field. Because of this seasonal effect, September and
October frequently produce impressive auroral displays. iscwsa.net

So why has this fall been quieter? The most likely explanation is that while Solar Cycle 25 remains
active, the Sun’s activity appears to be moving into the early stages of its declining phase. NOAA
and NASA solar cycle forecasts show that solar activity reached or passed its peak around
2024-2025 and is gradually beginning to decrease. That does not mean major storms are
impossible, but it does reduce the frequency of large Earth-directed coronal mass ejections. spaceweather.gov , https://www.nasa.gov/solar-cycle-progression-and-forecast/

Another factor is simple luck. Large geomagnetic storms require several conditions to align. The Sun
must produce a major flare or coronal mass ejection, the eruption must be directed toward Earth,

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