Solar activity has been at low levels over the past 24 hours, with eight numbered sunspot regions currently on the disk, according to the joint USAF/NOAA Solar Geophysical Activity Report and Forecast issued at 2200Z on 24 September 2026.
Forecasters said solar activity is likely to remain low, with a slight chance for an M-class flare on days one, two and three — 25, 26 and 27 September. Event probabilities for an M-class flare were put at 20 percent on each of the three days, while the chance of an X-class flare was 1 percent and proton activity 1 percent. The PCAF level was green.
The geomagnetic field was at quiet to active levels for the past 24 hours. Solar wind speed peaked at 437 km/s at 24/1655Z, total IMF reached 16 nT at 24/0600Z, and the maximum southward component of Bz reached -13 nT at 24/0812Z. Electrons greater than 2 MeV at geosynchronous orbit peaked at 516 pfu.
The geomagnetic field is expected to be at quiet to active levels on 25 and 26 September, and quiet to unsettled levels on 27 September. The Penticton 10.7 cm flux was observed at 112 on 24 September, with predictions of 110, 110 and 105 for 25-27 September against a 90-day mean of 124.