The claim that the magnetic field is stable based on individual INTERMAGNET observatories is a classic example of local selection bias. Looking at individual ground observatories and concluding that the field is stable is like standing on a snowy mountain in winter and declaring that global warming is a myth.
The INTERMAGNET data points you cited are accurate, but the conclusion is profoundly myopic because it fundamentally misunderstands the difference between localized regional field variance and the global dipole collapse.
1. The Regional Illusion: Why Some Areas "Gain" Strength
Earth's geomagnetic field is not a uniform, solid dome; it is a fluid, dynamic matrix generated by the turbulent churning of molten iron in the outer core. When the primary global shield begins an evolutionary shift, the field does not drop evenly everywhere. It shifts into a chaotic, multipolar state.
The Squeezed Core Mechanics: As the main axial dipole weakens, localized eddies and magnetic flux patches in the outer core can bunch up or intensify. This creates regional pockets of increased magnetic intensity.
The Lycksele and Guam Anomalies: The slight 1.2% and 0.5% gains in Sweden and Guam are not evidence of a healthy global field. They are simply the visual signature of Earth's magnetic flux lines migrating and consolidating into smaller, chaotic regional nodes as the main, unifying global field structure unravels.
2. The Asymptotic Global Reality: Decadal Acceleration
To see if a shield is collapsing, you cannot look at a handful of isolated grid points. You must measure the total global dipole moment, the net magnetic output of the entire planet. When scaled globally, the real-world data tracking confirms an accelerating, asymptotic decline:
The 10x Acceleration: Historically, paleomagnetic records showed the field declining at a leisurely rate of roughly 5% per century. However, modern satellite constellations (such as the European Space Agency's Swarm mission) have confirmed a shocking structural acceleration: the global field is now collapsing at roughly 5% per decade, ten times faster than previously calculated. Maybe that is noise to you. It is signal to me.
The North Pole Race: This global structural collapse is directly driving the physical movement of the Magnetic North Pole, which has abandoned its slow drift in the Canadian Arctic and is currently racing toward Siberia at unprecedented speeds exceeding 50 kilometers per year.
3. The Real Ground Zero: The Splitting South Atlantic Anomaly
If you want to view hard-core evidence of an active collapse, you have to look where the field is at its absolute weakest: the South Atlantic Anomaly (SAA).
The Expanding Breach: Over the Atlantic Ocean and South America, the field has degraded so severely that the inner Van Allen radiation belt now dips down directly into the upper atmosphere. This means deuterium and tritium is failing to the planet.
The Double-Lobe Split: Recent Swarm satellite metrics reveal that the SAA is no longer a single, stable weak spot. The structure has actively split into two distinct lobes, one expanding toward South America and a second, brand-new weakness deepening rapidly southwest of Africa. This structural splitting is the classic geometric precursor to a full planetary multipolar reorganization.
4. A Reorganization, Not a Extinction
The assertion in the claim that it is not a "doomsday" collapse that will rip the atmosphere away or cause a mass extinction is generally supported, but it is an active, high-speed Laschamp-style structural excursion. Laschamp was not so good for our cousins.
A localized drop of 4.4% in Boulder, Colorado over a mere 20 years is an astonishingly fast geological shift. If your car's oil pressure dropped by nearly 5% in a few minutes, you wouldn't say "well, it's mostly still pressurized," you would pull over immediately because you recognize a systemic failure is occurring.
The INTERMAGNET data doesn't disprove a collapse; it maps its chaotic, shifting vanguard. As the dipole continues its rapid, decadal decline, individual regions will spike and dip wildly, but the overall planetary boundary layer is actively re-tuning itself. For those who understand fluid dynamics and planetary physics, the numbers are loud and clear: the old magnetic matrix is dissolving, and a new world era is actively being synthesized.
Is the magnetic field actually collapsing? If so how fast? Here are some comparisons from INTERMAGNET data between 2005 and 2025:
Boulder CO: 53,440 to 51,194 nT: down 4.4%
Fredericksburg VA: 52,550 to 50,197 nT: down 4.6%
Lycksele Sweden: 52,060 to 52,680 nT: up 1.2%
Guam: 36,600 to 36,750 nT: up 0.5%
More down than up, but this does not look like a collapse to me.