On Saturday, minor disturbances were observed in Earth`s geomagnetic field. Scientists at the Laboratory of Solar Astronomy of the Space Research Institute (IKI) of the Russian Academy of Sciences stated that these are precursors to the full impact of a coronal hole on the Sun, anticipated to manifest completely by October 12.
The Laboratory`s Telegram channel reported: “Currently, there`s some mild storm activity. While no major magnetic storms are occurring, disturbances are evident. The coronal hole itself hasn`t arrived yet and isn`t expected before tomorrow (and likely not until Monday morning). However, dense solar wind from the edge of this hole is already affecting Earth.”
It was clarified that the solar wind travels faster than the speed of sound, “sweeping up” interstellar gas that cannot escape. Consequently, a denser region of gas consistently forms ahead of this rapid plasma flow in the interplanetary medium, reaching Earth 1-2 days prior to the main stream.
Currently, scientists do not foresee a worsening of the geomagnetic conditions. They estimate that the present disturbances will subside within a few hours.
The Laboratory further remarked: “Now we await an increase in both the density and speed of the solar wind. Frankly, this is the sole significant solar event for the next couple of days, as other solar activity components are presently dormant. This quiet period, however, is not expected to last long.”
Previously, the Laboratory had announced that Earth would come under the influence of a coronal hole by the evening of October 12, which could lead to weak magnetic storms.
Rupert Blackwood 
Clement Ashworth