A remarkable celestial event is on the horizon, as a combination of solar phenomena is set to create a dazzling display of auroras in the night sky. On the night of 16 September, a G3 geomagnetic storm is expected to grace Earth, originating from an X-class solar flare that erupted on the Sun on 14 September with a strength of X4.5. This powerful flare was accompanied by a coronal mass ejection (CME) and a coronal hole on the Sun, amplifying the potential for auroras to be visible as far south as Iowa and Pennsylvania, and even in the north of England and Wales.
As the solar particles and entangled magnetic fields from the CME interact with Earth’s magnetic field lines, they will create stunning auroras borealis and australis in the upper atmosphere. The forecast for this event is particularly high, with a 7 on the 10-point Kp index for geomagnetic activity, indicating a strong likelihood of witnessing this natural spectacle.
While most people may not notice the other effects of this cosmic event, such as intermittent high-frequency radio disruptions and mild GPS disturbances, spacecraft and satellites could experience increased drag and surface charging. However, for those within approximately 40 degrees latitude with clear skies, this is a rare opportunity to witness the beauty of the auroras.
The Sun is currently at the peak of its 11-year cycle, resulting in heightened flare and CME activity. This event serves as a reminder of the awe-inspiring power and beauty of our Sun, and the interconnectedness between our planet and the vast expanse of space. So mark your calendars for 16 September, and keep your eyes on the sky for a breathtaking display of nature’s light show.
