Geomagnetic storms today

On Tuesday, November 18, 2025, a geomagnetic activity level (kIndex) of 4 indicates a moderate level of activity, often seen as a transition between quiet and unsettled conditions. While this is not a high level of geomagnetic disturbance, it can still result in noticeable effects, particularly for weather-sensitive individuals, such as those with certain health conditions or sensitivities. People who are sensitive to geomagnetic fluctuations may experience a variety of symptoms, including headaches, fatigue, irritability, or disturbances in sleep patterns. Additionally, some individuals report heightened anxiety or mood changes during periods of increased geomagnetic activity. These psychological effects are thought to be linked to the body's response to environmental changes. Furthermore, while the kIndex of 4 suggests primarily minor disruptions, it can still have implications for technology, such as potential interference with satellite communications and navigation systems. Thus, even at this level, it's advisable for weather-sensitive individuals to stay informed and take precautions when necessary.