Solar activity has been at low levels over the past 24 hours, with two numbered sunspot regions currently on the disk, according to the joint USAF/NOAA Solar Geophysical Activity Report issued at 2200Z on 29 September 2026.
Solar activity is expected to be very low, with a chance for C-class flares and a slight chance for an M-class flare on days one, two and three (30 September, 1 October and 2 October). Event probabilities for an M-class flare were listed at 10 percent for each of the three days, with X-class and proton probabilities at 1 percent.
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 339 km/s at 28/2251Z, total IMF reached 4 nT at 29/1834Z, and the maximum southward component of Bz reached -2 nT at 29/1012Z. Electrons greater than 2 MeV at geosynchronous orbit peaked at 5621 pfu.
The geomagnetic field is expected to be at quiet levels on days one and two, and quiet to minor storm levels on day three. The Penticton 10.7 cm flux was observed at 92 on 29 September, with predictions of 095 for 30 September through 2 October, against a 90-day mean of 118.