Calm Before the Storm: Earth Navigates the First Peak of a Massive Geomagnetic Event

Author: Uliana S.

Beiji Village, in the northeast province of Heilongjiang, China.

According to monitoring data as of 04:00 UTC on January 20, 2026, the powerful geomagnetic storm currently impacting our planet is exhibiting highly complex dynamics. Following an initial impulsive phase that triggered extreme disturbances, the situation has entered a period of relative stabilization, though it remains far from calm. Current observations suggest that Earth is presently situated in the "eye of the storm"—a temporary lull in activity that precedes a potential second wave of intense solar energy.

The coronal mass ejection from the Carrington event was faster than this solar storm, but the overall magnetic field strength of this storm reached comparable levels — 90 nT for Bt.

The first peak of this event, which reached a formidable G4.7 intensity, has now passed. While the solar wind speed reached extreme levels during the initial impact, it has since stabilized at approximately 900 km/s. Despite this plateau, the speed remains 2.5 to 3 times higher than normal background levels. Furthermore, the interplanetary magnetic field induction near Earth has decreased by roughly half compared to its record-breaking values but remains anomalously high—nearly 10 times the usual level. These metrics have shifted from the realm of the "unbelievable" into the category of extreme but consistently measurable data.

Aurora in Slovakia on January 19, 2026.

The primary factor determining the evolution of the storm over the coming hours will be the behavior of the magnetic field's Bz-component. Scientists are currently observing a rapid fluctuation in its polarity. If this trend stabilizes and the field remains oriented southward, it will provide solar plasma with a direct path into the Earth's magnetosphere. Such a scenario would likely trigger a second powerful geomagnetic surge within the next 6 to 12 hours, potentially pushing indices back to at least a G4 level and prompting another attempt at a G5 category storm. The total duration of this geomagnetic event is expected to last at least 24 hours, while full stabilization of the environment could take between two and three days.

Aurora in Greenland

The most visually stunning result of the previous night's activity was the appearance of exceptionally powerful auroras, among the most intense recorded in the 21st century. The visible boundary for these displays descended to approximately 40 degrees latitude, making the phenomenon visible in regions far from the polar circle, including Southern Europe, the central United States, and northern Japan. During the coming night, particularly if the second phase of the storm develops, a repeat of these massive auroral displays is possible, though their intensity may not quite reach the peak levels seen previously.

The current situation remains historically significant as Earth continues to experience the effects of a rare double event: an ongoing S4-class radiation storm and a multi-phase extreme geomagnetic storm. This serves as a potent reminder of the dynamic connection between our planet and the Sun, demonstrating that space weather events can unfold not as a single strike, but as a prolonged and volatile storm with multiple acts. Researchers worldwide are maintaining a close watch, awaiting data on how the magnetic field will behave during these next decisive hours.

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