Overview

• NASA and NOAA modeling indicates a CME arrival in the late hours of Sept. 1 with the potential for a strong G3 geomagnetic storm extending into Sept. 2.
• A storm at G3 strength can disrupt satellites, radio links and GNSS and induce currents that stress power grids.
• Aurora visibility could push into Central Europe, giving observers in Germany a realistic chance to see the lights if skies are dark and clear.
• Suggested low–light locations in Germany include Helgoland, Pellworm and Spiekeroog, the Westhavelland dark‑sky park, the Rhön and the Winklmoos Alm.
• Experts note solar flares reach Earth in about eight minutes while CMEs take roughly 15 hours to several days, and L1 monitoring typically provides only 30–90 minutes of advance notice.