Overview

• Scientists at the Laboratory of Solar Astronomy (IKI RAS) report weak perturbations in Earth's magnetic field with no geomagnetic storms recorded.
• The lab attributes the activity to a denser region of plasma that precedes a fast solar-wind stream from a coronal hole.
• Current disturbances are expected to fade within hours under otherwise quiet solar conditions, according to the lab's update.
• The main coronal-hole influence has not arrived yet and could reach Earth within the next 24 to 48 hours, with timing still uncertain.
• Researchers explain that the precursor forms as faster wind sweeps up slower plasma, typically arriving one to two days before the main flow.