Geomagnetic storms 12 November 2025

On November 12, 2025, a kIndex of 8 indicates a severe geomagnetic storm, characterized by strong fluctuations in the Earth's magnetic field. Such conditions arise from solar wind disturbances, often from coronal mass ejections or high-speed solar streams. This heightened magnetic activity can have various effects on technology and human health, particularly for weather-sensitive individuals. People with certain medical conditions, like migraines or cardiovascular issues, may experience exacerbated symptoms during severe geomagnetic storms due to changes in atmospheric pressure and increased ionization. Additionally, those with sleep disorders may find their sleep patterns disrupted as geomagnetic activity can influence the nervous system. Beyond individual health impacts, severe geomagnetic storms can disrupt satellite operations, affect GPS accuracy, and cause fluctuations in power grids, leading to potential outages. Awareness and preparedness are crucial for both personal health and the mitigation of technological disruptions during these intense geomagnetic events.