A rare solar double feature is expected to bring two coronal mass ejections (CMEs) towards Earth, potentially lighting up northern US skies with an auroral display on Wednesday. The CMEs, launched from the Sun over the weekend, are forecasted to arrive close together, triggering G2-class geomagnetic storm conditions.
The solar cycle’s 11-year flip in its magnetic field causes sunspots to form, leading to powerful solar activity like flares and CMEs. When these energetic outbursts hit Earth, they can disrupt radio signals, affect power grids, and create stunning auroras.
According to the National Oceanic and Atmospheric Administration (NOAA), the two CMEs are expected to reach Earth’s outer atmosphere on April 16, with effects lasting through April 17. The Sun’s magnetic field is predicted to remain active throughout 2024 and into next year, leading to increased geomagnetic storms.
While these events won’t disrupt daily life, they may provide a rare opportunity to witness the Sun’s natural light shows in our planet’s skies.
Source: https://gizmodo.com/a-double-sunblast-could-mean-auroras-over-the-u-s-this-week-2000589069