A faint coronal mass ejection (CME) observed on July 23 following a filament eruption on the Sun is predicted to reach Earth by July 27. As a result, a minor (G1) geomagnetic storm watch has been issued for that day. According to NOAA's Space Weather Prediction Center, the following impacts are possible on July 27:

Power systems: Weak power grid fluctuations can occur.

Spacecraft operations: Minor impact on satellite operations possible.

Other systems: Migratory animals are affected at this and higher levels; aurora is commonly visible at high latitudes (northern Michigan and Maine).

For the curious, more information is available from https://solarham.net/ and https://www.swpc.noaa.gov/ 🤙 #hamradio #solarmaximum #solarcycle25