The Joint USAF/NOAA Solar Geophysical Activity Report, issued on August 21, 2026, indicates moderate solar activity over the past 24 hours, with four sunspot regions currently visible. Solar activity is expected to remain low for the next three days, though there is a chance for M-class flares and a slight chance for X-class flares.
The geomagnetic field has been at quiet to unsettled levels, with solar wind speed peaking at 567 km/s and electrons greater than 2 MeV reaching 1546 pfu. The forecast predicts quiet to unsettled geomagnetic conditions for the next two days, transitioning to quiet levels on August 24.
Probabilities for M-class flares are 40% daily, while X-class flares have a 10% daily chance from August 22-24. Middle latitudes face a 25% chance of active conditions on August 22-23, with high latitudes having a 30% chance of minor storms and a 30% chance of major-severe storms on August 22.