Solar activity has been at very low levels over the past 24 hours, with seven numbered sunspot regions currently on the disk, according to the joint USAF/NOAA Solar Geophysical Activity Report and Forecast issued at 2200Z on 11 September 2026.
Solar activity is likely to be low, with a slight chance for an M-class flare on days one, two and three — 12, 13 and 14 September. Event probabilities for an M-class flare are 10 percent on each of the three days, while the chance of an X-class flare or a proton event is 1 percent on each day. The PCAF level is green.
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 457 km/s at 0121Z on 11 September, and electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 7,008 pfu.
The geomagnetic field is expected to remain at quiet to unsettled levels on 12 and 13 September, then reach unsettled to active levels on 14 September. The Penticton 10.7 cm flux was observed at 110 on 11 September, with predictions of 110, 112 and 110 for the following three days.