SpaceWeatherLive.com forecasts that Thursday night the Kp index will reach 8+ in its scale from 0 to 9, indicating a very high level of magnetic field disturbance around the Earth.
The NOAA (North American Oceanic and Atmospheric Administration) forecasts that there will be a magnetic storm of strength G4, level 4 on a 5-point scale, i.e. very strong.
These are precisely the atmospheric conditions conducive to the Northern Lights - which Poland has seen quite a lot of recently.
Sources: PAP, SpaceWeatherlive.com, X
pt