The National Oceanic and Atmospheric Administration (NOAA) has issued a warning for a geomagnetic K-index of 7 or greater, indicating a G3 - Greater scale event. This space weather event is expected to begin on July 4, 2026, at 05:00 UTC.
The warning is valid until July 5, 2026, at 12:00 UTC. Such conditions can impact power systems and spacecraft operations.