Solar flaring activity was high during the past 24 hours, with an X1.3 and nine M-class flares registered in total. A yet-unnamed Active Region (AR) at S14E85 produced the X-class flare at 12 Sep 09:43 UTC and an M-1.9 at 11 Sep 15:30 UTC. NOAA AR 3811 (magnetic configuration Beta, Catania sunspot group no 89) produced five M-class flares, with the brightest being an M5.0 at 12 Sep 00:12 UTC. NOAA AR 3814 produced three M-class flares, with the brightest being an M2.0 at 11 Sep 17:52. As the AR at S14E85 is too close to the solar limb for an accurate assess of its magnetic complexity, it is difficult to estimate the chances for another X-class flare in the next 24 hours. In any case, numerous M-class flares are very likely to take place during the next 24 hours.
No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours.
The greater than 10 MeV proton flux, as reported by GOES-18, was below the 10 pfu alert threshold level during the last 24 hours. Nevertheless, there is a chance that a proton event might occur as a result of the increased solar flaring activity.
The greater than 2 MeV electron flux, as measured by the GOES-18 satellite, was at nominal levels during the last 24 hours and is expected to remain at these levels during the next 24 hours. The 24h electron fluence was at very low levels during the past 24 hours and is expected to remain at these levels for the following 24 hours.