A G1 (Minor) geomagnetic storm watch has been issued for 25 May with a G2 (Moderate) watch for 26 May due to the arrival of multiple CMEs from 22-23 May associated with flare activity from active sunspot.
Issued: 2021 May 24 0337 UTC
Power systems: High-latitude power systems may experience voltage alarms, long-duration storms may cause transformer damage.
Spacecraft operations: Corrective actions to orientation may be required by ground control; possible changes in drag affect orbit predictions.
Other systems: HF radio propagation can fade at higher latitudes, and aurora has been seen as low as New York and Idaho (typically 55° geomagnetic lat.).
For the space weather scales go to https://www.swpc.noaa.gov/noaa-scales-explanation