The latest Joint USAF/NOAA Solar Geophysical Activity Report, issued on May 31, 2026, indicates low solar activity over the past 24 hours, with eight numbered sunspot regions currently visible on the solar disk. The geomagnetic field has experienced quiet to active levels during the same period.
Solar activity is expected to remain low, though there is a 25% chance for M-class flares on June 1st and 2nd, decreasing to 20% on June 3rd. The report also notes a 5% chance for X-class flares and proton events on the first two days.
Geomagnetic conditions, which saw solar wind speeds peak at 566 km/s, are predicted to be quiet to active on June 1st and 3rd, and quiet to unsettled on June 2nd. High latitudes face a 40% chance of major-severe storms on June 1st and 3rd.
This forecast suggests continued vigilance for potential, albeit low-probability, solar events impacting Earth's magnetic field.