Yesterday, March 17th, in the Geomagnetic Observatory in Besk Duży was observed an extremely strong magnetic activity, manifested in a very large and rapid changes in the Earth's magnetic field. Ratio K, used to describe magnetic activity, received yesterday extremely high value 8 (at maximum 9), as shown in the following magnetogram.

This event, known as a magnetic storm is caused by a strong phenomena on the Sun (eruptions, solar flares). These phenomena cause the emission of X-ray fluxes and high-energy particles, which reaching the Earth are mostly deflected by the Earth's magnetic field. These particles that are trapped by the Earth's magnetosphere, cause excitation of atoms in the atmosphere, resulting in the Auroral glow. This occurs mainly in the polar regions, but after intense flares it can also be seen in mid-latitudes, including over Polish.