Solar activity has been at high levels over the past 24 hours, with four numbered sunspot regions currently visible on the disk, according to a joint report by the USAF and NOAA. Looking ahead, solar activity is expected to be low, though there is a 40% chance for M-class flares and a 10% chance for X-class flares on August 21, 22, and 23.
The geomagnetic field experienced quiet to unsettled levels during the last 24 hours, with solar wind speed peaking at 598 km/s and total Interplanetary Magnetic Field (IMF) reaching 6 nT. Electrons greater than 2 MeV at geosynchronous orbit peaked at 863 pfu.
For the upcoming days, the geomagnetic field is predicted to be at quiet to active levels on August 21 and 22, transitioning to quiet to unsettled levels on August 23. Probabilities for minor geomagnetic storms at middle latitudes are 10% on August 21, decreasing to 5% on August 22 and 23, while high latitudes face a 30% chance of minor storms across all three days.