The world's attention is turning to space as it awaits the arrival of geomagnetic storm on Earth, following the detection of successive coronal mass ejections from the Sun. Engineer Majid Abu Zahra, head of the Jeddah Astronomical Society, explained that recent models from the Space Weather Prediction Service (SWS), part of the US space agency NOAA, indicate the possibility of two coronal mass ejections merging in a phenomenon known scientifically as a "coronal merger," which could lead to the formation of a denser, more energetic plasma cloud as it travels toward Earth.
Abu Zahra explained that this phenomenon occurs when a fast solar flare catches up with a slower one, and they then merge in interplanetary space to form a single mass with greater speed and density. This increases its potential to affect Earth's magnetic field upon arrival. Current forecasts indicate that this plasma cloud could arrive in the late hours of June 4th or the early morning of June 5th, 2024.
What is a geomagnetic storm and how does it form?
Geomagnetic storms are major disturbances in Earth's magnetosphere, the protective shield that surrounds our planet and protects it from harmful solar radiation. These storms are primarily caused by increased solar activity, such as solar flares and coronal mass ejections (CMEs), which eject enormous amounts of charged particles (plasma) into space. When these emissions are directed toward Earth, they interact with its magnetic field, causing temporary disturbances. We are currently approaching the peak of the 25th solar cycle, a period of about 11 years in which solar activity increases significantly, making such storms more frequent and intense.
Potential global impacts of the upcoming geomagnetic storm
Experts predict that this plasma cloud will cause a geomagnetic storm , potentially escalating temporarily to a G4 (severe) storm if the accompanying magnetic conditions develop as expected. Such storms can have significant global impacts, most notably the widespread and spectacular display of the aurora borealis, extending to mid-latitudes and making it visible in parts of Europe and North America. Technically, storms of this intensity can disrupt power grids, interfere with GPS navigation systems, and interfere with high-frequency radio communications used in aviation and maritime navigation. While less powerful than the one experienced in May 2024, this storm remains a significant astronomical event worthy of observation.
Why will the storm's impact be limited on the Kingdom and the Arab region?
Engineer Abu Zahra confirmed that the expected effects of this storm on Saudi Arabia and the Arab world will be very limited. The main reason for this is the geographical location of the Arab region near the equator, where the effects of geomagnetic storms are at their weakest, while their intensity is concentrated near the North and South Poles. Therefore, no aurora borealis activity is expected in the region's skies. As for the potential technical effects, they may be limited to a slight and temporary decrease in the accuracy of GPS systems, or minor disruptions to some wireless communications. These effects will not be noticeable to the general public and will not pose a direct threat to infrastructure or daily life.
