Solar activity has been at low levels over the past 24 hours, with nine numbered sunspot regions currently on the disk, according to the joint USAF/NOAA Solar Geophysical Activity Report and Forecast issued at 2200Z on 23 September 2026.
Solar activity is likely to remain low, with a slight chance for an M-class flare on days one, two and three — 24, 25 and 26 September. Event probabilities for a Class M flare were put at 20 percent on each of the three days, with Class X and proton events at 1 percent and PCAF at green.
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 317 km/s at 23/2041 UTC, total IMF reached 14 nT at 23/2043 UTC, and the maximum southward component of Bz reached -4 nT at 23/2028 UTC. Electrons greater than 2 MeV at geosynchronous orbit peaked at 1111 pfu.
The geomagnetic field is expected to be at quiet to minor storm levels on day one (24 September) and quiet to active levels on days two and three (25 and 26 September). The Penticton 10.7 cm flux was observed at 121 on 23 September, with predictions of 120, 120 and 118 for 24-26 September, against a 90-day mean of 124.