NOAA and USAF Forecast High Solar Activity and Severe Geomagnetic Storms

The National Oceanic and Atmospheric Administration (NOAA) and the U.S. Air Force (USAF) have reported high solar activity and forecast significant geomagnetic storm levels for the coming days. Issued on June 3, 2026, this joint report indicates a period of heightened space weather.

Solar activity has been high over the past 24 hours, with eight sunspot regions currently visible. Forecasters anticipate moderate solar activity with a 15% chance of an X-class solar flare on June 4, 5, and 6. There is also a 60% chance of M-class flares during this period.

The geomagnetic field, previously quiet to unsettled, is expected to escalate. It is forecast to reach unsettled to severe storm levels on June 4, active to severe storm levels on June 5, and unsettled to active levels on June 6. Protons also have a 10% chance of crossing threshold levels over these three days, with high latitudes facing a 79% chance of major-severe storms on June 4.