The National Oceanographic Atmospheric Administration (NOAA) reported that there are three CMEs heading towards Earth from the Sun.
NOAA measures the strength of these storms and says that there is chance of a Severe G4 geomagnetic storm being triggered especially on Wednesday 11 into Thursday 12 November 2025. Geomagnetic storms are dangerous for astronauts, but not harmful to humans as Earth’s atmosphere protects us from the radiation, but can sometimes disrupt satellites and also different forms of electronic devices, such as phones. This storm is classed as a rare KP8. The KP index is an alternative measure of geomagnetic activity extending from KP1 to KP9. G4 (Severe) storm levels reached on 12 November at 01:20 UTC.
The National Oceanographic Atmospheric Administration (NOAA) reported that there are three CMEs heading towards Earth from the Sun.
NOAA measures the strength of these storms and says that there is chance of a Severe G4 geomagnetic storm being triggered especially on Wednesday 11 into Thursday 12 November 2025. Geomagnetic storms are dangerous for astronauts, but not harmful to humans as Earth’s atmosphere protects us from the radiation, but can sometimes disrupt satellites and also different forms of electronic devices, such as phones. This storm is classed as a rare KP8. The KP index is an alternative measure of geomagnetic activity extending from KP1 to KP9. G4 (Severe) storm levels reached on 12 November at 01:20 UTC.
G4 (Severe) Watch in Effect for 12 November
Noorderlichtkans 11-12 november 2025
G4 (Severe) storm levels reached on 12 November at 0120 UTC
Stormachtig ruimteweer door uitbarstingen op de zon
Solar cycle 25
Gegevens