The geomagnetic field is expected to escalate from unsettled to major storm levels over the next three days, according to a joint report issued by the U.S. Air Force (USAF) and the National Oceanic and Atmospheric Administration (NOAA). The forecast, covering August 27-29, 2026, follows a period of quiet geomagnetic activity.
Solar activity has been at moderate levels for the past 24 hours, with six numbered sunspot regions currently visible. NOAA predicts continued moderate solar activity, with a slight chance for an X-class flare on each of the next three days.
The geomagnetic field is specifically forecast to be at unsettled to minor storm levels on August 27, active to major storm levels on August 28, and unsettled to major storm levels on August 29. Additionally, there is a slight chance that protons could cross threshold levels during this three-day period.