On July 16, 2025, a magnitude 7.3 earthquake struck off the Alaska Peninsula.
This piece covers what actually happened, what seismologists actually said about its cause, and what’s known and unknown about solar-terrestrial connections, corrected against the actual public record rather than an appealing but unsupported coincidence.
The Alaska Earthquake, Accurately Reported
At 12:37 PM Alaska Daylight Time on July 16, 2025, a magnitude 7.3 earthquake struck approximately 54 miles south of Sand Point in the Aleutians East Borough, at a depth of roughly 20 to 36 kilometers depending on the specific measurement source. The National Tsunami Warning Center issued an immediate tsunami warning, later downgraded to an advisory and then canceled within a few hours, with no significant structural damage reported in the communities nearest the epicenter, though residents in Sand Point described objects falling from shelves and cupboard doors swinging open during the strongest shaking.
What the Seismologists Actually Said
This is precisely where the story needs its most important correction, because the actual explanation Alaska’s own state seismologist gave publicly is specific, and doesn’t require looking beyond Earth’s own crust at all. Michael West, Alaska’s state seismologist at the Alaska Earthquake Center, explained that this was the fifth earthquake exceeding magnitude 7.0 in this same small stretch of the Aleutian chain, just a couple hundred kilometers, since 2020. West described the region as being in a “period of geological unrest,” where tectonic plates along the Alaska-Aleutian megathrust converge a couple of inches per year, gradually accumulating strain that eventually releases unevenly across a sequence of large earthquakes. He noted this cluster is squarely within expected seismic behavior for the region: “Earthquakes of magnitudes 7.0, 8.0, and even on occasion 9.0 we fully expect through that area.”
This specific context matters enormously for evaluating the “cosmic connection” framing directly: the on-record explanation from the scientist actually studying this specific earthquake sequence is a well-understood, ordinary tectonic pattern, not an anomaly requiring an exotic cause. The region sits within the aftershock zone of the 2020 magnitude 7.8 Simeonof earthquake, and this July 2025 event fits directly into that established, recorded sequence.
The Sunspot Activity, Correctly Attributed
Sunspot region 4136 was active in early-to-mid July 2025, and this needs accurate attribution. French astrophotographer Philippe Tosi captured published images on July 10, 2025, from Nîmes, France, showing the sunspot crackling with dozens of small magnetic explosions known as Ellerman bombs, an established solar physics term for brief, small-scale reconnection events in the lower solar atmosphere, not “shadow flares.” Ellerman bombs are named for astronomer Ferdinand Ellerman, who first documented this class of phenomenon in 1917, making them a well-established, century-old category of solar observation rather than a newly discovered or unusually escalating phenomenon. The sunspot had already produced multiple M-class solar flares, mid-level eruptions on the standard solar flare classification scale, as it rotated across the Sun’s face. No credible astronomical source could verify the specific named observer, “David Wilson from Inverness, Scotland,” or the specific terminology “shadow flares.” The underlying solar activity is more accurately attributed to Ellerman bombs at sunspot 4136, credited by name in contemporary astronomy press coverage.
NASA’s Parker Solar Probe
The Parker Solar Probe’s achievements are real and don’t need embellishment. On December 24, 2024, the probe made its closest-ever approach to the Sun, passing roughly 3.8 million miles from the solar surface, deep within the corona, traveling at approximately 430,000 miles per hour, the fastest speed any human-made object has ever achieved. Equipped with the Wide-Field Imager for Solar Probe, WISPR, the mission has captured scientifically valuable images of coronal mass ejections and solar wind formation, directly advancing research into a long-standing scientific puzzle first theorized by physicist Eugene Parker in 1958.
Why the Timing Coincidence Doesn’t Establish Causation
The core problem with linking these two events is straightforward: correlation in timing between two independently well-explained phenomena is not evidence of a causal connection between them, and this case has an unusually clear, specific, well established explanation for the earthquake side of the coincidence, seismic strain accumulation along a known megathrust boundary, articulated directly by the seismologist who studies this exact fault system. No peer-reviewed mechanism has been established connecting solar acoustic phenomena in the chromosphere to tectonic stress release dozens of kilometers beneath Earth’s crust, and the physical scales involved, chromospheric shock waves dissipating across millions of kilometers of space before reaching Earth’s magnetosphere, versus mechanical stress within solid rock, are not connected by any established physical mechanism in current geophysics or heliophysics.
The 2018 Study, Read Accurately
The specific claimed 2018 Geophysical Research Letters study deserves direct attention, since research connecting solar activity to atmospheric pressure is an active area of study, and it deserves accurate representation rather than overstatement. Published research has examined connections between solar wind variability and Earth’s upper atmosphere and ionosphere, since the solar wind genuinely does interact with Earth’s magnetosphere in measurable, well-documented ways. What this body of research does not establish is a mechanism connecting these atmospheric-level interactions to the release of tectonic strain occurring dozens of kilometers underground, an entirely different physical domain governed by rock mechanics and fault friction rather than atmospheric pressure. Citing solar-atmospheric research as support for a solar-seismic connection specifically conflates two different, unconnected areas of active geophysical study.
Why This Pattern of Coincidence-Seeking Recurs
Why solar-terrestrial “coincidence” stories like this one recur so reliably is worth naming directly, since the Sun’s activity provides an almost inexhaustible supply of raw material for them. The Sun is active essentially every day, producing sunspots, flares, and coronal mass ejections on an ongoing basis, and Earth experiences a magnitude 6 or greater earthquake somewhere on the planet roughly 100 to 150 times per year on average. Given this baseline frequency on both sides, some solar event will almost always have occurred within a day or two of any given significant earthquake purely by chance, without requiring any causal connection at all. This is precisely the kind of statistical pattern that produces compelling-sounding coincidences reliably, regardless of whether any underlying connection exists, and it’s worth applying the same skepticism to any single instance of this pairing that a careful reader would apply to noticing that a favorite sports team happened to win on the same day as some unrelated news event.
What Solar Activity Actually Does Affect
None of this means solar activity is irrelevant to Earth, space weather effects are significant and worth understanding accurately. Coronal mass ejections and geomagnetic storms are well established phenomena that can disrupt satellites, radio communications, and power grids, and produce the aurora. These are legitimate, actively monitored risks that agencies including NOAA’s Space Weather Prediction Center track continuously. What space weather science does not currently establish is any mechanism by which this solar activity triggers earthquakes specifically, a claim that would require a physical pathway current geophysics has not identified or measured.
The Aleutian Megathrust, in Fuller Context
The geological setting behind this earthquake sequence is worth understanding in more depth, since it’s a well-studied and well-understood system. The Aleutian-Alaska megathrust is the boundary along which the Pacific Plate subducts beneath the North American Plate, an extensively monitored tectonic system responsible for some of the largest earthquakes ever recorded, including the 1964 Good Friday Earthquake, a magnitude 9.2 event, the second-largest earthquake ever instrumentally recorded anywhere on Earth, and the 1946 magnitude 8.6 earthquake in the same general region. This July 2025 earthquake occurred within the documented aftershock zone of the 2020 magnitude 7.8 Simeonof earthquake, part of an ongoing sequence that seismologists have been actively monitoring and publicly explaining for years, not a sudden or unexplained event. The Alaska Earthquake Center maintains publicly available seismic monitoring data and regularly briefs the public on exactly this kind of regional seismic activity through established channels, including an ongoing public podcast called “What’s Shaking Alaska.”
Why Earthquake Prediction Remains Genuinely Difficult
Why the search for external earthquake triggers, solar or otherwise, remains such an active and appealing area of speculation is worth explaining honestly: reliable earthquake prediction remains one of the genuinely unsolved problems in modern science, and that scientific gap creates understandable motivation to look for any pattern that might close it. Seismologists can identify regions at elevated long-term risk with confidence, based on known fault systems and historical earthquake recurrence intervals, exactly the kind of analysis Michael West applied to this Aleutian sequence. What remains genuinely unsolved is short-term prediction, the ability to say a specific earthquake will occur on a specific day, and this acknowledged limitation is precisely the gap that solar-connection theories, along with numerous other proposed triggers over the decades including animal behavior, atmospheric pressure changes, and lunar tidal forces, have repeatedly attempted to fill. None of these proposed mechanisms has yet produced a reliable, testable, peer-reviewed prediction method, and the scientific community continues to treat short-term earthquake prediction as an open problem rather than one solved by any single external trigger theory.
What NASA’s Own Scientists Actually Say
Closing the solar side of this story with an honest quote from the mission itself, rather than an implied certainty NASA’s own scientists haven’t claimed, matters here. Adam Szabo, a Parker Solar Probe mission scientist at NASA’s Goddard Space Flight Center, has described the mission’s findings with real scientific caution, noting the team has “a whole lot of new intriguing data” without yet reaching “a final consensus” on several open questions about solar wind origins. This is worth highlighting because it’s exactly the kind of honest, provisional language scientists use when discussing genuinely unresolved questions, a tone that stands in contrast to the confident causal claims a solar-earthquake connection story requires. The actual Parker Solar Probe team is excited about still-developing findings concerning the Sun’s own atmosphere and wind. They are not claiming, and have not published anything suggesting, a connection to seismic activity on Earth.
A Note on Reading Science Journalism Carefully
A broader, practical point about reading stories like this one is worth closing on, since the pattern here is instructive beyond this single case. Two events, reported accurately on their own individual terms, can be combined into a compelling but misleading narrative simply through selective framing, emphasizing the coincidental timing while omitting the specific, on-record explanation the relevant expert actually gave. This isn’t necessarily a case of inventing facts from nothing, both the earthquake and the sunspot activity are real, but of selectively arranging facts to imply a connection the actual, available expert testimony directly contradicts. Readers encountering this kind of story are well served by asking a simple, specific question: what did the actual scientists studying this specific event say about its cause, in their own words, at the time? In this case, that answer was on the public record within hours, and it didn’t involve the Sun at all.
The Honest Summary
Both the Alaska earthquake and the Parker Solar Probe’s ongoing discoveries are real and independently remarkable. The earthquake fits a specific, well established, ordinary tectonic pattern that the region’s own state seismologist explained clearly and on the record within hours of the event. The Sun’s activity, observed and photographed by name at sunspot 4136, is a legitimate, actively studied area of heliophysics in its own right, worth following through sources like NASA’s own mission updates. Treating their coincidental timing as evidence of a hidden connection between them substitutes an appealing narrative for the specific, documented, mundane explanation both fields of science already provide, and it does a disservice to the genuine scientific achievement each event actually represents on its own terms, a well-monitored tectonic system behaving exactly as its own researchers expected, and a spacecraft achieving speeds and proximity to the Sun that pushed the boundaries of human engineering.
